hot springs and geysers

hot springs and geysers

Water sometimes comes into contact with hot rock. The water may emerge at the surface as either a hot spring or a geyser.

geysers

Geysers are also created by water that is heated beneath the Earths surface, but geysers do not bubble to the surface they erupt. When water is both superheated by magma and flows through a narrow passageway underground, the environment is ideal for a geyser. The passageway traps the heated water underground, so that heat and pressure can build. Eventually, the pressure grows so great that the superheated water bursts out onto the surface to create a geyser. Figure 1.2. Conditions are right for the formation of geysers in only a few places on Earth. Of the roughly 1,000 geysers worldwide, about half are found in the United States. Yellowstone isnt the only place in the continental U.S. with hot springs and geysers. Hot Creek in California deserves its name; Like Yellowstone, it is above a supervolcano. Click image to the left or use the URL below. URL: Castle Geyser is one of the many gey- sers at Yellowstone National Park. Castle erupts regularly, but not as frequently or predictably as Old Faithful.

textbook_image

hot springs

Water heated below ground that rises through a crack to the surface creates a hot spring. The water in hot springs may reach temperatures in the hundreds of degrees Celsius beneath the surface, although most hot springs are much cooler. Click image to the left or use the URL below. URL:

textbook_image

instructional diagrams

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questions

hot springs are cooler than geysers.

a) true

-->  b) false

hot springs or geyers are created when

-->  a) water comes into contact with hot rock.

b) water enters and leaves a magma chamber.

c) water travels along an earthquake fault.

d) water bubbles up from the mantle.

bison use the hot springs in yellowstone to stay warm in the winter because the hot springs do not freeze.

-->  a) true

b) false

this results when water that is trapped becomes superheated until finally the pressure builds enough for it to break the seal of the earths crust.

a) an earthquake

b) a hot spring

-->  c) a geyser

d) a hot pool

geysers

a) are water that bubbles from the ground, similar to hot springs.

-->  b) erupt because superheated water is trapped until the pressure builds enough for the

c) are found in most states in the continental u.s.

d) erupt frequently and on a predictable schedule.

as far as the worlds geysers go,

a) nearly all are found in iceland.

b) nearly all are found in the hawaiian islands.

c) half are found in the east african rift.

-->  d) half are found in the united states.

old faithful geyser is noteworthy for the frequency and predictability of its eruptions.

-->  a) true

b) false

hot springs are only found in the tectonically active western united states.

-->  a) true

b) false

at least two of the hot spring areas in the continental u.s. are

-->  a) above supervolcanoes

b) found in the rocky mountains.

c) near subduction zones.

d) the hottest hot springs in the world.

the heat that creates the geysers at yellowstone national park is due to

a) subduction of an oceanic plate beneath the area.

b) heat from the inner core.

-->  c) a hotspot beneath the area.

d) solar energy.

diagram questions

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