Elementary School DMC Dev

The diagram below represents an aquatic food web.

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What must the fish do to gain energy from the Sun?

  (A) feed on water plants

  (B) perform photosynthesis

  (C) eat snails and mosquito larvae

  (D) live in warm areas of the pond


Use the data table below to answer the question.

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Maria grew four plants in an experiment about plant growth. The table shows the design and results of Maria's experiment. What was the independent variable in this investigation?

  (A) the amount that each plant grew

  (B) the amount of food each plant received

  (C) the amount of water each plant received

  (D) the amount of sunlight each plant received


Which foot would most likely help a bird live in water?

  (A)

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  (B)

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  (C)

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  (D)

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A scientist was studying a mammal population. The data table below shows some of her results.

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Which graph best represents the information in the table?

  (A)

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  (B)

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  (C)

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  (D)

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What organism most likely belongs in the circle?

  (A) plant

  (B) frog

  (C) rabbit

  (D) hawk


Which picture correctly shows where the shadow would be?

  (A)

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  (B)

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  (C)

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  (D)

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A light bulb changes electrical energy into

  (A) light energy only.

  (B) heat and mechanical energy.

  (C) light and heat energy.

  (D) light and mechanical energy.


Use the pictures to answer the question. Which might have happened to the glass in Picture A to cause the temperature to change as shown in Picture B?

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  (A) The glass was placed in the refrigerator for 10 minutes.

  (B) Cold water was added to the glass.

  (C) The glass was taken from a sunny place and put in a shady place.

  (D) The glass was placed in warm water.


Use the diagram below to answer the question.

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Which part of the water cycle is represented by arrow 3?

  (A) evaporation

  (B) condensation

  (C) precipitation

  (D) groundwater


An engineer is trying to design a faster submarine. Which of the following animals would be most useful for the engineer to study?

  (A)

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  (B)

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  (C)

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  (D)

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The diagram below shows a plant.

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The primary purpose of structure 3 is to

  (A) absorb water.

  (B) make food.

  (C) protect flowers.

  (D) produce seeds.


Which set of magnets shown below will be attracted to each other?

  (A)

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  (B)

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  (C)

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  (D)

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Which of the following objects will affect the direction that a compass needle points?

  (A)

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  (B)

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  (C)

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  (D)

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The picture shows a ladder leaning against a wall.

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A person climbing this ladder is using the ladder as

  (A) a lever.

  (B) a wedge.

  (C) a simple gear.

  (D) an inclined plane.


The diagram below shows a bean seed that is beginning to germinate in soil. The first structure to emerge is labeled X.

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What is the function of structure X?

  (A) to make food

  (B) to absorb water

  (C) to produce seeds

  (D) to release oxygen


Kendra has a mineral that she wants to identify. It is white in color, has a glassy luster, and has a hardness of 5. The table below shows some properties of selected minerals.

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Based on the information in the table, Kendra's mineral is most similar to

  (A) calcite.

  (B) fluorite.

  (C) apatite.

  (D) topaz.


The pictures below show animals from different parts of the world.

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Which of the following characteristics do all of these animals have that allows them to be classified in the same group?

  (A) fur

  (B) claws

  (C) big ears

  (D) webbed feet


The picture below shows a nut and a bolt.

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Which of the following hand tools would most likely be used to tighten this nut and bolt?

  (A) a wrench and a hammer

  (B) a hammer and a saw

  (C) a wrench and a screwdriver

  (D) a screwdriver and a saw


The picture below shows the result of a geological event that changed a mountain rapidly.

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Which of the following most likely caused the rapid change of the mountain?

  (A) landslide

  (B) snowfall

  (C) wind erosion

  (D) volcanic eruption


The picture below shows a bird.

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From the shape of its beak and the length of its legs, this bird is best adapted for feeding on which of the following?

  (A) insects that feed on plants

  (B) small fish in shallow water

  (C) nuts from riverside trees and plants

  (D) birds in ground nests


The picture below shows two trees and the beginning of a treehouse.

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A group of friends is building a treehouse. They are using straight wooden boards to build a platform between two trees. Which of the following is the most important characteristic of the board they have put between the two trees?

  (A) color

  (B) dryness

  (C) hardness

  (D) strength


A crane operator uses a crane with an electromagnet to move scrap metal over a train car, as shown below.

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Which of the following statements describes what the crane operator does to drop the scrap metal into the train car?

  (A) The crane operator turns on a magnetic charge in the scrap metal.

  (B) The crane operator turns off an electric current in the electromagnet.

  (C) The crane operator sends out a signal that causes the train car to become an electromagnet.

  (D) The crane operator sends out a signal that blocks the magnetic properties of the scrap metal.


The table below shows two groups of organisms.

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How are the organisms sorted into two groups?

  (A) The animals in Group 1 cannot fly, and the animals in Group 2 can fly.

  (B) The animals in Group 1 are mammals, and the animals in Group 2 are not mammals.

  (C) The animals in Group 1 have feathers, and the animals in Group 2 do not have feathers.

  (D) The animals in Group 1 do not eat plants, and the animals in Group 2 do eat plants.


The diagram below shows a present-day elephant and an ancestor of the elephant.

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Based on the diagram, what is a major difference between the two elephants?

  (A) The ancestor elephant has fur.

  (B) The ancestor elephant has a tail.

  (C) The present-day elephant has larger tusks.

  (D) The present-day elephant has smaller feet.


Giant Spider Web Envelops Texas Park

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Entomologists are debating the origin and rarity of a sprawling spider web that blankets several trees, shrubs and the ground along a 200-yard stretch of trail in a North Texas park. Officials at Lake Tawakoni State Park say the massive mosquito trap is a big attraction for some visitors, while others will not go anywhere near it. "At first, it was so white it looked like fairyland," said Donna Garde, superintendent of the park about 45 miles east of Dallas. "Now it's filled with so many mosquitoes that it's turned a little brown. There are times you can literally hear the screech of millions of mosquitoes caught in those webs." Spider experts say the web may have been constructed by social cobweb spiders, which work together, or could be the result of a mass dispersal in which the arachnids spin webs to spread out from one another. "I've been hearing from entomologists from Ohio, Kansas, British Columbia-all over the place," said Mike Quinn, an invertebrate biologist with the Texas Parks and Wildlife Department who first posted photos online. Herbert A. "Joe" Pase, a Texas Forest Service entomologist, said the massive web is very unusual. "From what I'm hearing it could be a once-in-a-lifetime event," he said. But John Jackman, a professor and extension entomologist for Texas A&M University, said he hears reports of similar webs every couple of years. "There are a lot of folks that don't realize spiders do that," said Jackman, author of "A Field Guide to the Spiders and Scorpions of Texas." "Until we get some samples sent to us, we really won't know what species of spider we're talking about," Jackman said. Garde invited the entomologists out to the park to get a firsthand look at the giant web. "Somebody needs to come out that's an expert. I would love to see some entomology intern come out and study this," she said. Park rangers said they expect the web to last until fall, when the spiders will start dying off. The mosquitoes trapped in the giant spider web are used by the spiders to provide

  (A) air to breathe

  (B) color to the body

  (C) water for energy

  (D) energy for growth


The Detroit Salt Mine Company began removing salt from the ground in 1906. This underground mine covers 6 square kilometers beneath the city of Detroit, Michigan. When the mine opened, people used the salt to preserve food, make glass, and tan leather goods. Today, people use the salt to melt ice on highways during winter storms.

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A salt mine consists of several different rocks and minerals. Which physical property of rocks and minerals is most important when considering the support of the walls in the salt mine?

  (A) flexibility

  (B) hardness

  (C) ability to conduct heat

  (D) ability to be attracted by magnets


The Detroit Salt Mine Company began removing salt from the ground in 1906. This underground mine covers 6 square kilometers beneath the city of Detroit, Michigan. When the mine opened, people used the salt to preserve food, make glass, and tan leather goods. Today, people use the salt to melt ice on highways during winter storms.

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Rocks and minerals are made of matter. Which statement best describes rocks and minerals as matter?

  (A) Each occupies space and contains a definite amount of material.

  (B) Each occupies space and contains the same amount of material.

  (C) All occupy the same amount of space and contain a definite amount of material.

  (D) All occupy the same amount of space and contain the same amount of material.


The Detroit Salt Mine Company began removing salt from the ground in 1906. This underground mine covers 6 square kilometers beneath the city of Detroit, Michigan. When the mine opened, people used the salt to preserve food, make glass, and tan leather goods. Today, people use the salt to melt ice on highways during winter storms.

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When salt is mined, machines scrape the mine walls and change salt rocks into very tiny salt crystals. What happens to the mass of 1 kilogram of salt rocks when the rocks change into very tiny salt crystals?

  (A) The total mass increases.

  (B) The total mass decreases.

  (C) The total mass stays the same.

  (D) The total mass increases and then decreases.


A kitten is looking directly into a mirror. Which drawing best shows the image of the kitten in the mirror?

  (A)

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  (B)

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  (C)

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  (D)

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Brown-headed cowbirds are small birds found throughout North American grasslands and along edges of forests. For food, the brown-headed cowbirds rely on grazing animals to uncover insects and seeds. When a female brown-headed cowbird sees eggs in the nest of another bird, she lays her own egg in the nest. She usually chooses nests with eggs that are smaller than hers. The other bird species then raises the brown headed cowbird hatchling. The brown-headed cowbird hatchling grows quickly and is larger than the other hatchlings in the nest. The brown-headed cowbird often lays eggs in the nest of the yellow warbler. The yellow warbler lives near forests, builds nests in trees and thick brush, and eats insects and fruit.

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Why is the appearance of the brown-headed cowbird hatchling different from the other hatchlings in the nest?

  (A) Physical likenesses are learned.

  (B) Physical features are not inherited in birds.

  (C) The brown-headed cowbird hatched before the other hatchlings.

  (D) The brown-headed cowbird is not related to the mother of the other hatchlings.


Brown-headed cowbirds are small birds found throughout North American grasslands and along edges of forests. For food, the brown-headed cowbirds rely on grazing animals to uncover insects and seeds. When a female brown-headed cowbird sees eggs in the nest of another bird, she lays her own egg in the nest. She usually chooses nests with eggs that are smaller than hers. The other bird species then raises the brown headed cowbird hatchling. The brown-headed cowbird hatchling grows quickly and is larger than the other hatchlings in the nest. The brown-headed cowbird often lays eggs in the nest of the yellow warbler. The yellow warbler lives near forests, builds nests in trees and thick brush, and eats insects and fruit.

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The removal of trees from the habitat of the yellow warbler would most likely cause the population of brown-headed cowbirds to

  (A) decrease due to decreased nesting areas

  (B) decrease due to an increased seed supply

  (C) increase due to a decreased number of insects

  (D) increase due to increased competition with other birds


Brown-headed cowbirds are small birds found throughout North American grasslands and along edges of forests. For food, the brown-headed cowbirds rely on grazing animals to uncover insects and seeds. When a female brown-headed cowbird sees eggs in the nest of another bird, she lays her own egg in the nest. She usually chooses nests with eggs that are smaller than hers. The other bird species then raises the brown headed cowbird hatchling. The brown-headed cowbird hatchling grows quickly and is larger than the other hatchlings in the nest. The brown-headed cowbird often lays eggs in the nest of the yellow warbler. The yellow warbler lives near forests, builds nests in trees and thick brush, and eats insects and fruit.

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When a brown-headed cowbird eats seeds and insects, most of the food is

  (A) changed to waste

  (B) digested and used for energy

  (C) digested and stored for future use

  (D) changed to sugar by the energy of the sun


Giant Spider Web Envelops Texas Park

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Entomologists are debating the origin and rarity of a sprawling spider web that blankets several trees, shrubs and the ground along a 200-yard stretch of trail in a North Texas park. Officials at Lake Tawakoni State Park say the massive mosquito trap is a big attraction for some visitors, while others will not go anywhere near it. "At first, it was so white it looked like fairyland," said Donna Garde, superintendent of the park about 45 miles east of Dallas. "Now it's filled with so many mosquitoes that it's turned a little brown. There are times you can literally hear the screech of millions of mosquitoes caught in those webs." Spider experts say the web may have been constructed by social cobweb spiders, which work together, or could be the result of a mass dispersal in which the arachnids spin webs to spread out from one another. "I've been hearing from entomologists from Ohio, Kansas, British Columbia-all over the place," said Mike Quinn, an invertebrate biologist with the Texas Parks and Wildlife Department who first posted photos online. Herbert A. "Joe" Pase, a Texas Forest Service entomologist, said the massive web is very unusual. "From what I'm hearing it could be a once-in-a-lifetime event," he said. But John Jackman, a professor and extension entomologist for Texas A&M University, said he hears reports of similar webs every couple of years. "There are a lot of folks that don't realize spiders do that," said Jackman, author of "A Field Guide to the Spiders and Scorpions of Texas." "Until we get some samples sent to us, we really won't know what species of spider we're talking about," Jackman said. Garde invited the entomologists out to the park to get a firsthand look at the giant web. "Somebody needs to come out that's an expert. I would love to see some entomology intern come out and study this," she said. Park rangers said they expect the web to last until fall, when the spiders will start dying off. The brown body color of the social cobweb spider is

  (A) learned from parents

  (B) selected by the offspring

  (C) caused by the environment

  (D) inherited from parents to offspring


Giant Spider Web Envelops Texas Park

image

Entomologists are debating the origin and rarity of a sprawling spider web that blankets several trees, shrubs and the ground along a 200-yard stretch of trail in a North Texas park. Officials at Lake Tawakoni State Park say the massive mosquito trap is a big attraction for some visitors, while others will not go anywhere near it. "At first, it was so white it looked like fairyland," said Donna Garde, superintendent of the park about 45 miles east of Dallas. "Now it's filled with so many mosquitoes that it's turned a little brown. There are times you can literally hear the screech of millions of mosquitoes caught in those webs." Spider experts say the web may have been constructed by social cobweb spiders, which work together, or could be the result of a mass dispersal in which the arachnids spin webs to spread out from one another. "I've been hearing from entomologists from Ohio, Kansas, British Columbia-all over the place," said Mike Quinn, an invertebrate biologist with the Texas Parks and Wildlife Department who first posted photos online. Herbert A. "Joe" Pase, a Texas Forest Service entomologist, said the massive web is very unusual. "From what I'm hearing it could be a once-in-a-lifetime event," he said. But John Jackman, a professor and extension entomologist for Texas A&M University, said he hears reports of similar webs every couple of years. "There are a lot of folks that don't realize spiders do that," said Jackman, author of "A Field Guide to the Spiders and Scorpions of Texas." "Until we get some samples sent to us, we really won't know what species of spider we're talking about," Jackman said. Garde invited the entomologists out to the park to get a firsthand look at the giant web. "Somebody needs to come out that's an expert. I would love to see some entomology intern come out and study this," she said. Park rangers said they expect the web to last until fall, when the spiders will start dying off. The characteristic of the social cobweb spiders that helps them survive is the ability to

  (A) attract birds

  (B) change color

  (C) work together

  (D) live through the winter


Students observed a creek during a field trip to a local nature center. A nature center guide explained that natural processes had formed the creek and reshaped the surface of Earth along the creek.

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Students compared their observations of the creek with the diagram of the Grand Canyon below.

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Which process best describes how the Grand Canyon was formed?

  (A) fast erosion by wind

  (B) fast weathering by wind

  (C) slow erosion by moving water

  (D) slow weathering by moving water


Over time, a woodland pond filled with sediment. The habitats and food sources of four different birds are shown in the table below.

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Which bird would most likely need to find a similar habitat in a new location after the pond fills with sediment?

  (A) the barn owl

  (B) the cardinal

  (C) the bald eagle

  (D) the wood duck


Which picture does NOT show an insect?

  (A)

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  (B)

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  (C)

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  (D)

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This table shows the temperature and precipitation (rain or snow) in four different towns on the same day.

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Where did it snow?

  (A) Town A

  (B) Town B

  (C) Town C

  (D) Town D


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Which of the figures above shows a situation where two magnets repel each other?

  (A) Figures 1 and 3

  (B) Figures 2 and 3

  (C) Figures 1 and 4

  (D) Figures 1, 2, 3, and 4


Which of these are insects?

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  (A) 1 and 3 only

  (B) 1 and 4 only

  (C) 2 and 4 only

  (D) 3 and 4 only


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Look at the picture above. Where is the best location to grow crops?

  (A) Location A

  (B) Location B

  (C) Location C

  (D) Location D


Which pie chart shows the proportions of land and water on Earth?

  (A)

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  (B)

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  (C)

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  (D)

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Alice watches a sunrise from across a calm lake. She sees a sun in the sky and a sun in the lake as shown below.

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Why does Alice see a sun in the lake?

  (A) The sunlight warms that part of the lake.

  (B) The sky spreads sunlight over the lake.

  (C) The sunlight reflects off the lake water.

  (D) Clouds reflect sunlight into the lake.


Jane liked roller coasters, so she decided to investigate how loop-the-loops worked. She did the following investigation with the ramp and toy car shown in the diagram below.

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Question: How high does a toy car need to be released for the toy car to travel completely around a loop? Prediction: The toy car needs to be almost 20 cm up the ramp to travel around the loop. Materials: ramp toy car meter stick to measure height in centimeters (cm) Procedure: 1. Mark the ramp at heights 5, 10, 15, 20, and 25 cm and record the heights in the data table. 2. Release the toy car from each height. 3. In the data table, record the car's motion in the loop. Data:

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Which variable did Jane change (manipulate)?

  (A) The height the toy car starts

  (B) The weight of the toy car

  (C) The angle of the ramp


Jane liked roller coasters, so she decided to investigate how loop-the-loops worked. She did the following investigation with the ramp and toy car shown in the diagram below.

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Question: How high does a toy car need to be released for the toy car to travel completely around a loop? Prediction: The toy car needs to be almost 20 cm up the ramp to travel around the loop. Materials: ramp toy car meter stick to measure height in centimeters (cm) Procedure: 1. Mark the ramp at heights 5, 10, 15, 20, and 25 cm and record the heights in the data table. 2. Release the toy car from each height. 3. In the data table, record the car's motion in the loop. Data:

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What could Jane do to give the car more energy?

  (A) Release the car higher on the ramp

  (B) Increase the width of the track

  (C) Change the size of the loop


Jane liked roller coasters, so she decided to investigate how loop-the-loops worked. She did the following investigation with the ramp and toy car shown in the diagram below.

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Question: How high does a toy car need to be released for the toy car to travel completely around a loop? Prediction: The toy car needs to be almost 20 cm up the ramp to travel around the loop. Materials: ramp toy car meter stick to measure height in centimeters (cm) Procedure: 1. Mark the ramp at heights 5, 10, 15, 20, and 25 cm and record the heights in the data table. 2. Release the toy car from each height. 3. In the data table, record the car's motion in the loop. Data:

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Instead of just releasing the toy car from a height of 10 cm, Jane pushed it. What most likely would happen?

  (A) The toy car would have too little speed to travel completely around the loop.

  (B) The toy car would have enough speed to travel completely around the loop.

  (C) The toy car would have too much speed to travel completely around the loop.


Jane liked roller coasters, so she decided to investigate how loop-the-loops worked. She did the following investigation with the ramp and toy car shown in the diagram below.

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Question: How high does a toy car need to be released for the toy car to travel completely around a loop? Prediction: The toy car needs to be almost 20 cm up the ramp to travel around the loop. Materials: ramp toy car meter stick to measure height in centimeters (cm) Procedure: 1. Mark the ramp at heights 5, 10, 15, 20, and 25 cm and record the heights in the data table. 2. Release the toy car from each height. 3. In the data table, record the car's motion in the loop. Data:

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What heights should Jane check to find the lowest possible release height to make the car travel completely around the loop?

  (A) 6-9 cm

  (B) 11-14 cm

  (C) 16-19 cm


Which scientific tool gives you the most useful information while studying the objects shown below?

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  (A) Binoculars

  (B) Hand lens

  (C) Thermometer


Students planted one hundred flower seeds. They observed the growth of their plants once a week. Which tool could be used to record their observations?

  (A)

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  (B)

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  (C)

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  (D)

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Which organism needs to make its own food?

  (A)

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  (B)

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  (C)

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  (D)

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The chart shows observations of the Moon.

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Which drawing shows how the Moon would most likely appear on day 13?

  (A)

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  (B)

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  (C)

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  (D)

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A balloon has a negative charge. A glass rod has a positive charge.

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What will happen when the glass rod is brought near the balloon?

  (A) The balloon will be attracted to the rod.

  (B) The balloon will be repelled by the rod.

  (C) The balloon will remain in place.

  (D) The balloon will spin in circles.


The picture below shows several different birds.

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What characteristic do all birds share?

  (A) They can fly.

  (B) They have feathers.

  (C) They have webbed feet.

  (D) They eat worms.


In which circuit are both bulbs lit?

  (A)

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  (B)

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  (C)

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  (D)

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The drawing below shows a plant during the early development stage in its life cycle.

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Under normal conditions, which of the following will occur next as the plant continues to grow?

  (A) Fruits and roots will develop.

  (B) Seeds and stems will develop.

  (C) Stems and leaves will develop.

  (D) Flowers and fruits will develop.


The map below shows the location of South Carolina.

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South Carolina is humid during the summer months. Which of the following is the most likely cause of the humid conditions?

  (A) runoff from inland mountains

  (B) flooding from rivers and streams

  (C) groundwater bubbling to the surface

  (D) evaporation from the surface of the ocean


The picture below shows a wind-up toy train. The key on the side of the train is turned to wind up the toy.

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The key used to wind up the train is an example of which simple machine?

  (A) pulley

  (B) wedge

  (C) inclined plane

  (D) wheel and axle


Fossils are the evidence of organisms that lived long ago. Which of these animals would most likely form a fossil?

  (A)

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  (B)

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  (C)

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  (D)

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Each of the animals below belongs to a different group.

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Which physical feature classifies all four animals into the same group?

  (A) the type of skin

  (B) the number of legs

  (C) the size of the eyes

  (D) the location of the mouth


Some organisms require little water to live. Which organism is least likely affected by a drought?

  (A)

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  (B)

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  (C)

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  (D)

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Which organism has only one cell?

  (A)

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  (B)

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  (C)

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  (D)

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The picture below shows organisms that live in the ocean.

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Which organism makes its own food?

  (A) organism A

  (B) organism B

  (C) organism C

  (D) organism D


A student uses a rubber band to launch the four objects shown in the table.

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If the student pulls the rubber band back the same amount each time, which object will most likely move the fastest when launched?

  (A) paper clip

  (B) piece of paper

  (C) eraser

  (D) rubber ball


The diagram below shows a toaster.

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In order to toast a slice of bread, the toaster changes electrical energy into which other type of energy?

  (A) magnetic

  (B) chemical

  (C) mechanical

  (D) heat


Base your answer on the diagram below and on your knowledge of science. The diagram shows a person in a wheelchair, using a ramp to enter a building.

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The ramp in the diagram is an example of which simple machine?

  (A) pulley

  (B) lever

  (C) inclined plane

  (D) balance


Base your answer on the diagram below and on your knowledge of science. The diagram shows a person in a wheelchair, using a ramp to enter a building.

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Which type of energy is the person using to move the wheelchair up the ramp?

  (A) heat

  (B) light

  (C) magnetic

  (D) mechanical


The four bean seeds in the diagram below were planted on different days. Each seed was planted in the same kind of soil and pot. The seeds were given the same amounts of sunlight and water each day. The diagram shows all four pots on the same day. The pots are labeled A, B, C, and D.

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Based on the growth and development of the four bean seeds, which one most likely was planted before the other three?

  (A) A

  (B) B

  (C) C

  (D) D


The diagram below shows an emperor penguin. Four body structures are labeled.

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Which body structure helps the penguin stay warm as it dives into icy water?

  (A) beak

  (B) feathers

  (C) flippers

  (D) webbed feet


Base your answer on the food chain below and on your knowledge of science.

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Which organism in this food chain is a producer?

  (A) cricket

  (B) frog

  (C) green plant

  (D) snake


Base your answer on the food chain below and on your knowledge of science.

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Which organism in this food chain is both predator and prey?

  (A) cricket

  (B) frog

  (C) green plant

  (D) snake


Base your answer on the diagram below and on your knowledge of science. The diagram shows what happens to rock materials as they interact with air and water. Letters A, B, C, and D show some rock materials at different places on Earth's surface.

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Which force causes the rock materials to move from A to B?

  (A) electricity

  (B) friction

  (C) gravity

  (D) magnetism


Base your answer on the diagram below and on your knowledge of science. The diagram shows what happens to rock materials as they interact with air and water. Letters A, B, C, and D show some rock materials at different places on Earth's surface.

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Letter C shows the process of erosion, because rock material is

  (A) moved by running water

  (B) chipped, with sharp edges

  (C) forming solid rock

  (D) soaked in ocean water


Base your answer on the diagram below and on your knowledge of science. The diagram shows what happens to rock materials as they interact with air and water. Letters A, B, C, and D show some rock materials at different places on Earth's surface.

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Letter D shows the process of deposition, because rock material is

  (A) broken up by the ocean bottom

  (B) settled on the ocean bottom

  (C) moved by ocean water

  (D) absorbed by ocean water


Which electric circuit produces light?

  (A)

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  (B)

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  (C)

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  (D)

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Three metal cubes are heated to the temperatures shown and placed in contact with one another on a nonconducting surface. The picture below shows the cubes next to one another and their temperatures.

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In which direction does thermal energy begin to flow between the metal cubes?

  (A)

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  (B)

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  (C)

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  (D)

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At the beginning of the week, there were three snails and 12 live plants in an aquarium. The picture above shows the aquarium at the end of the week. Which of the following most likely happened during the week?

  (A) The snails reproduced faster than the plants.

  (B) The plants grew at a faster rate than the snails.

  (C) The snails ate many of the plants.

  (D) The number of plants and snails both decreased.


Look at the chart below. It is a record of the average sea level in centimeters (cm) at Galveston, Texas, from 1950 to 1975.

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How many centimeters (cm) did the average sea level change from 1950 to 1975?

  (A) 2 cm

  (B) 10 cm

  (C) 254 cm


Look at the diagram below. It shows a ball as it falls and then bounces several times.

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What will happen to the ball in the next few seconds?

  (A) It will bounce higher.

  (B) It will become flat.

  (C) It will stop moving.


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These girls can hear each other because the string -

  (A) vibrates

  (B) stretches

  (C) is strong

  (D) is long


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Which of the following describes the motion of Earth shown in this picture?

  (A) Vibrating

  (B) Rotating

  (C) Revolving

  (D) Falling


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Which of these shows the day when this thermometer was left outside?

  (A)

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  (B)

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  (C)

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  (D)

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Which of these belongs in the center?

  (A) Things that cover animal bodies

  (B) Things that make the animal smaller

  (C) Things that keep animal bodies cool

  (D) Things that help animal bodies get oxygen


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Which of these belongs in square

  (A) of this flow chart? A Bird

  (B) Toad

  (C) Snake

  (D) Fish


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Which of the following organisms provides energy for more than one organism in this food web?

  (A) Bird

  (B) Plant

  (C) Fox

  (D) Mouse


Students grew some seeds in a plastic bag. They then took a picture each day to have a record of growth. Which of these is probably the first picture the students took?

  (A)

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  (B)

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  (C)

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  (D)

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Which location is likely to have the greatest water pressure, the coldest temperatures, and the smallest number of living organisms?

  (A) 1

  (B) 2

  (C) 3

  (D) 4


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Which labeled part in this picture has evidence of kinetic energy?

  (A) 1

  (B) 2

  (C) 3

  (D) 4


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Based on the picture, the bag of leaves has -

  (A) less mass than the pebble

  (B) the same mass as the pebble

  (C) the same volume as the pebble

  (D) less volume than the pebble


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Lee uses a microscope during science class. He sees this organism in a drop of water. Which organism did he most likely see?

  (A) Paramecium

  (B) Vorticella

  (C) Euglena

  (D) Amoeba


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Students planted two types of bean seeds. Both types of bean plants are measured after two weeks. Which of these questions are they MOST likely trying to answer?

  (A) Which type of bean plant grows faster?

  (B) Which type of bean plant is prettier?

  (C) Which type of bean plant tastes better?

  (D) Which type of bean plant costs more?


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This pencil is about how many paper clips long?

  (A) 2

  (B) 5

  (C) 7

  (D) 9


Which of these birds MOST likely uses its beak to scoop up small fish for food?

  (A)

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  (B)

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  (C)

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  (D)

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Part of a coral reef is shown. A coral reef is -

  (A) a rock

  (B) an ecosystem

  (C) an ocean current

  (D) an underwater cave


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A student observes a mineral that is colorless and harder than glass. Based on the chart, which mineral is the student observing?

  (A) Amphibole

  (B) Feldspar

  (C) Garnet

  (D) Quartz


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Which of these is a difference between tadpoles and adult frogs?

  (A) Only tadpoles can swim.

  (B) Only tadpoles can lay eggs.

  (C) Only frogs are eaten by predators.

  (D) Only frogs can survive on land.


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Acorn barnacles are seashore animals found on rocks. They live 1 to 2 meters above low-tide level. These rocks are the acorn barnacles' -

  (A) ecosystem

  (B) community

  (C) food web

  (D) habitat


Study the data table below.

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Two students want to know how temperature affects rubber bands. They decide to test rubber bands inside and outside their school during the winter. The students plan to stretch each rubber band until it breaks. Which set of materials should be used for this test?

  (A) set 1

  (B) set 2

  (C) set 3

  (D) set 4


The diagram below shows a landscape.

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Where in the diagram would the air pressure be the greatest?

  (A) at the beach

  (B) on top of the mountain

  (C) at the bottom of the clouds

  (D) above Earth's atmosphere


Roger collected four rock samples and wrote a description of how each was formed. Which of the following rocks that Roger collected is a metamorphic rock?

  (A)

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  (B)

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  (C)

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  (D)

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A volcano erupted in the Atlantic Ocean and formed a new island over time. The picture below shows the new island as it was forming.

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The new island is mainly made of which type of rock?

  (A) igneous

  (B) limestone

  (C) metamorphic

  (D) sedimentary


The picture below shows a turtle living in a container. This turtle is kept in a classroom.

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The students in the class want to build a new container to hold five more turtles. Which of the following changes is most important to make when they build a new container for all six turtles to live in?

  (A) use a larger base

  (B) use a taller frame

  (C) use thicker glass walls

  (D) use a stronger screen lid


Which of the following diagrams correctly shows the four planets closest to the Sun and their moons?

  (A)

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  (B)

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  (C)

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  (D)

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Use the information below to answer the question.

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Several students placed a toy truck on a table in front of a plane mirror and viewed the image of the truck in the mirror. Next, the students moved the toy truck to different positions and observed the reflected images of the truck from each position. How does the size of the image of the toy truck compare to the size of the actual toy truck?

  (A) the image is larger than the actual truck

  (B) the image is smaller than the actual truck

  (C) the image is the same size as the actual truck

  (D) the image size depends on the light behind the toy truck


Use the information below to answer the question. Sunlight enters a room through an open window. The sunlight shines on the wood table, area rug on the floor, and the plane mirror and metal spoon on the table. A spot of light appears on the wall opposite the window.

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An image of the ceiling fan appears in the plane mirror on the table. How does the image of the fan in the mirror compare to the actual fan on the ceiling?

  (A) larger

  (B) smaller

  (C) reversed

  (D) upside down


Use the information below to answer the question. Students placed 250 milliliters of water in three identical containers. Container 1 had a tightly sealed lid and was placed on a classroom counter. Container 2 had no lid and was placed on a classroom table. Container 3 had no lid and was placed on a table outside in the shade. The students measured the amount of water in each container at the end of each day for four days. Their results are shown in the data table below.

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Which process changes evaporated water into liquid water?

  (A) competition

  (B) condensation

  (C) erosion

  (D) precipitation


Two circuits are shown below. The light bulb of Circuit 1 does not glow. The light bulb of Circuit 2 glows.

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Which statement best explains why the light bulb of Circuit 1 does not glow?

  (A) Circuit 1 is an open circuit.

  (B) Circuit 1 is a closed circuit.

  (C) The positive terminal of Circuit 1 is connected to the battery.

  (D) The negative terminal of Circuit 1 is connected to the battery.


Use the information below to answer the question. Some rocks contain small amounts of iron. These rocks have magnetic properties. The iron particles act like tiny magnets that are attracted by the two oppositely charged magnetic poles of Earth.

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A student uses a wand with a magnet on the tip and iron filings to complete pictures. A clear sheet of plastic covers a cardboard picture. Iron filings are between the cardboard picture and the sheet of plastic. As the student moves the wand across the sheet of plastic, the iron filings follow the movement of the wand.

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Which change in the design of the toy would allow the student to move more iron filings with the wand at one time?

  (A) Use a wand with a more powerful magnet.

  (B) Make the iron filings a different color.

  (C) Make the sheet of plastic larger.

  (D) Use a longer wand.


Use the information and table below to answer the question. A group of students investigated natural resources and the products humans make from these natural resources. The students recorded their findings in the table below.

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Humans do not use cows

  (A) for milk

  (B) for meat

  (C) to make paper

  (D) to make leather


Use the passage below to answer the question. Rusty Crayfish: A Small Invader Causing Big Problems

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The rusty crayfish originated in the Ohio River Basin. This invader species began to spread into the Great Lakes regions. They compete with the native crayfish and also, greatly decrease the amount of vegetation, thereby impacting entire food webs. The rusty crayfish have a large eating capacity when consuming aquatic plants. In addition, they eat aquatic insects. When the rusty crayfish reproduce, they can lay 50-575 eggs at one time. Due to their hyper-appetite, rusty crayfish greatly decrease the amount and diversity of plants in aquatic areas, increase competition with native crayfish, and consume an abnormal amount of other aquatic species. When the rusty crayfish invade, they are disrupting the entire ecosystem. The decreased amount of diversity in vegetation affects the population of many other aquatic species in the surrounding ecosystem. Plant beds provide a habitat for invertebrates as well as shelter for many different species of fish. When vegetation is disturbed, all of the species which rely on it have a harder time surviving. Rusty crayfish displace the native species of crayfish from the aquatic ecosystems it invades. In a study of 150 lakes and streams that had been invaded by the rusty crayfish, seventy-five percent had no native crayfish remaining. The displacement occurs through competition for food. Because the "rusty" is so aggressive, natives get beat out when feeding and soon their population greatly decreases. As aquatic species disappear, disruption of the food web occurs, which affects all the species in an ecosystem. By introducing rusty crayfish to new ecosystems, they have a great potential to crumble. What role does the rusty crayfish have in a food web?

  (A) consumer

  (B) decomposer

  (C) producer

  (D) scavenger


Use the information and data table below to answer the question. A student performed an investigation on green single-celled organisms called Euglena. Two samples of Euglena were placed in two different containers of water taken from the same source. One sample of Euglena was kept in a dark area. The other sample of Euglena was kept in a lighted area. The student recorded the observations in the table below.

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What is the primary source of energy used by Euglena in Sample 2?

  (A) food

  (B) oxygen

  (C) sunlight

  (D) water


Use the following information to answer the question.

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Ankylosaurus was a large armored dinosaur that lived between 65 and 70 million years ago. They had many unique features, including rows of spikes along their entire bodies, large horns on the sides of their heads, and club-like tails. They were approximately 10 m long, with an average body mass of 2,700 kg (as much as a small truck). The top parts of their bodies were covered with thick plates fused into their leathery skin, and they had bony plates around their eyes. The undersides of their bellies were not plated. Scientists believe Ankylosaurus was a plant-eater. Partial skeletons of Ankylosaurus have been found in Montana, USA, and Alberta, Canada. Fossilized tracks that scientists believe were made by Ankylosaurus have also been found in Bolivia, South America.

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The chart above provides partial data on four different dinosaurs. Which of these dinosaurs might have preyed on Ankylosaurs?

  (A) Allosaurus

  (B) Gigantosaurus

  (C) Carcharodontosaurus

  (D) Tyrannosaurus rex


Use the following information to answer the question. Model Telephone Two students want to find out what affects the sounds heard through model telephones. They investigate the materials used and the tightness of the material connecting the cups. Their first three setups are shown. They use the same length of string or wire in each setup. The boy repeats the same sounds at the same volume for each setup.

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They record results of the three setups in the table below.

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Which variable changed between setup 1 and setup 2?

  (A) the type of cups used

  (B) the number of cups used

  (C) the tightness of the string

  (D) the thickness of the string


Use the following information to answer the question.

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The picture shows a pond ecosystem. Many plants and animals live in and around the pond. Which organism in the pond ecosystem completely changes its physical features and food source when it becomes an adult?

  (A) Duck

  (B) Turtle

  (C) Trout

  (D) Butterfly


Use the following information to answer the question. Two Investigations Students conduct investigations with solids and liquids over several days.

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Students pour vinegar into a beaker. They add a spoonful of baking soda to the vinegar. They observe bubbles. The bubbles stop when the baking soda is no longer visible.

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Students pour water into a beaker. They add a cube of frozen water (ice). They observe that the water level changes to 500 mL. After a few minutes, the cube begins to melt. When the cube melts, the water level does not change. Look at the investigation from day 1. What observation suggests that a gas has formed?

  (A) The baking soda disappears.

  (B) Bubbles are formed in the vinegar.

  (C) All chemical reactions produce gas.

  (D) The vinegar begins to give off a smell.


Use the illustrations below to compare the life cycles of mosquitoes and grasshoppers.

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What is one correct comparison of the mosquito and grasshopper life cycles?

  (A) Mosquito larvae develop on land, and grasshopper nymphs develop in water.

  (B) Grasshopper eggs are laid in water, and mosquito eggs are laid in the ground.

  (C) Mosquitoes change habitats during their lives, and grasshoppers develop in the same habitat.

  (D) Grasshoppers change shape as they develop, and mosquitoes do not change shape as they develop.


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Some students measured the growth of four tomato plants after one month. The plants grew in identical containers with different soils. The Students made a table of their data, as shown above. What is the best title for the second column in their table?

  (A) Plant Height (cm)

  (B) Days of Growth

  (C) Container Size (mL)

  (D) Number of Plants


Use the following information to answer the question. Paul and Sheryl studied a Toy Car System at school. The Toy Car System is a model car with a battery. When the ON button is pressed, the toy car rolls forward, plays music, and flashes the headlamps. Paul and Sheryl made the following diagram showing the parts of the Toy Car System.

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Paul and Sheryl did an investigation with the toy car. They recorded their data in the table shown.

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What question can Paul and Sheryl answer with their data?

  (A) How does the time the car rolled affect the distance the car moved?

  (B) How does the size of the wheels affect the distance the car moved?

  (C) How does the mass of the car affect the distance the car moved?


Use the following information to answer the question. Paul and Sheryl studied a Toy Car System at school. The Toy Car System is a model car with a battery. When the ON button is pressed, the toy car rolls forward, plays music, and flashes the headlamps. Paul and Sheryl made the following diagram showing the parts of the Toy Car System.

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Most real cars are powered by gasoline. Scientists are developing cars powered only by batteries. What is a problem scientists are trying to solve by developing these cars?

  (A) Gasoline resources are limited.

  (B) Cars often break down on highways.

  (C) Batteries are expensive to produce.