maps

bathymetric maps

A bathymetric map is like a topographic map with the contour lines representing depth below sea level, rather than height above. Numbers are low near sea level and become higher with depth. Kilauea is the youngest volcano found above sea level in Hawaii. On the flank of Kilauea is an even younger volcano called Loihi. The bathymetric map pictured in the Figure 1.2 shows the form of Loihi. Loihi volcano growing on the flank of Kilauea volcano in Hawaii. Black lines in the inset show the land surface above sea level and blue lines show the topography below sea level. A geologic map of the region around Old Faithful, Yellowstone National Park.

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geologic maps

A geologic map shows the geological features of a region (see Figure 1.3 for an example). Rock units are color- coded and identified in a key. Faults and folds are also shown on geologic maps. The geology is superimposed on a topographic map to give a more complete view of the geology of the region. Click image to the left or use the URL below. URL:

topographic maps

Topographic maps represent the locations of geographical features, such as hills and valleys. Topographic maps use contour lines to show different elevations. A contour line is a line of equal elevation. If you walk along a contour line you will not go uphill or downhill. Topographic maps are also called contour maps. The rules of topographic maps are: Each line connects all points of a specific elevation. Contour lines never cross since a single point can only have one elevation. Every fifth contour line is bolded and labeled. Adjacent contour lines are separated by a constant difference in elevation (such as 20 ft or 100 ft). The difference in elevation is the contour interval, which is indicated in the map legend. Scales indicate horizontal distance and are also found on the map legend. Old Faithful erupting, Yellowstone Na- tional Park. While the Figure 1.1 isnt exactly the same view as the map at the top of this concept, it is easy to see the main features. Hills, forests, development, and trees are all seen around Old Faithful.

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instructional diagrams

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questions

topographic maps

a) use different colors to show different rock types

-->  b) use contour lines to show different elevations

c) are also called geologic maps

d) all of the above

another name for contour maps is

a) resource map

b) road map

c) geologic map

-->  d) topographic map

a bathymetric map represents the depth below sea level.

-->  a) true

b) false

this type of map shows rock units and features like faults and folds.

a) topographic map

b) bathymetric map

-->  c) geologic map

d) contour map

on a bathymetric map, numbers are negative because they represent depth below sea level.

-->  a) true

b) false

contour lines cross on very steep slopes.

a) true

-->  b) false

a geologic map of the grand canyon, with its layer cake geology, will look like this.

-->  a) bands of colors from the top to the bottom of the canyon.

b) circles of different color from the top to the bottom of the canyon.

c) very steep contour lines with no other topographic features.

d) all of the above

on a topographic map

a) contour intervals are always set at a standard 20 feet.

-->  b) contour lines are the closest together on the steepest slopes.

c) no human settlements or roads are shown.

d) all of the above

if i wanted to know how deep lake tahoe is, i would use this map.

a) geological map

b) topographic map

c) globe

-->  d) bathymetric map

if i wanted to find the san andreas fault in california, i would use this map.

a) bathymetric map

-->  b) geologic map

c) topographic map

d) contour map

diagram questions

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