1. Chapter 19

2. albedo effect. Coriolis effect. rotational effect. wind belts.
1. The spin of the Earth’s rotation that causes winds to deflect toward the right in the Northern Hemisphere and the left in the Southern Hemisphere, is known as the:
albedo effect.
Coriolis effect.
rotational effect.
wind belts.

3. 2. Cool, dry air sinks to the Earth’s surface near which latitude(s)?
equator
30 degrees north and south latitude
45 degrees north and south latitude
60 degrees north and south latitude

4. 3. Atmospheric circulation is driven by:
heat energy from the Sun.
heat energy from the Earth’s interior.
the Earth’s magnetic field.
the gravitational field of the Moon.

5. 4. The largest grains that can be carried by wind are:
gravel.
silt.
sand.
clay.

6. 5. Red dust that accumulates on Florida and the islands of the Bahamas is windblown from:
California.
England.
the Sahara Desert.
Australia.

7. 6. Wind acts as an agent of erosion via:
sandblasting.
deflation.
dune migration.
stream migration.
A and B.

8. 7. Desert pavement develops due to:
defalation.
transport of gravel clasts by wind.
transport of gravel clasts by water.
sandblasting.

9. 8. True or False: Sand dune forms develop as a balance between deposition and erosion.

10. 9. The diagram is an example of a:
barchan dune.
blowout dune.
transverse dune.
longitudinal dune.

11. 10. The diagram is an example of a:
barchan dune.
blowout dune.
transverse dune.
longitudinal dune.

12. 11. The diagram is an example of a:
barchan dune.
blowout dune.
transverse dune.
longitudinal dune.

13. 12. Which type of dune forms at right angles to wind direction where sand is abundant and vegetation is absent?
barchan dune
blowout dune
transverse dune
longitudinal dune

14. 13. The abundant loess deposits of the midwestern United States are excellent:
for building materials.
for farmland.
as a source of petroleum.
as a source of mineral resources.

15. 14. Arid regions comprise ___ of Earth’s land surface area.
<2%
10%
20%
40%

16. 15. Deserts generally form in regions where the air is:
cold and dry.
hot and dry.
hot and wet.
cold and wet.
A and B.

17. 16. True or False: Most of Antarctica is a desert.

18. 17. Deserts occur mainly:
along belts at 30 degrees north and south of the equator.
landward of mountain ranges.
landward of cold oceanic upwelling zones.
in landlocked regions far from the ocean.
All of the above.

19. 18. In a desert environment, the primary agent of erosion is:
wind.
ice.
running water.
mass wasting.

20. 19. Desertification is exacerbated by:
overpopulation of desert regions.
overfarming of desert regions.
global climate change.
All of the above.

21. 20. What percent of the desert area is covered with sand?
90%
70%
50%
20%