What is the main engineering problem associated with permafrost?
A) difficulty in setting building foundations in frozen ground
B) difficulty in growing vegetation to control soil erosion
C) melting of permafrost produces subsidence
D) cold temperatures make construction materials more brittle
C
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Suppose at your home in the northern hemisphere the surface wind is blowing from the northwest. Which of the following directions relative to your home will have the region of lowest pressure?
A. south B. east C. north D. west
What allows water to be a polar molecule?
A) Hydrogen bonds B) Adhesion C) Surface tension D) The angular shape of the molecule
A ________ cold front occurs when a strong high-pressure circulation brings colder, mP air into the eastern United States from the Atlantic Ocean
A) anticyclonic B) backdoor C) veering D) reverse
What would you expect the geothermal gradient to be under Yellowstone as compared to the eastern United States?
A. The gradient would not exist in the eastern United States. B. The gradient would be lower under Yellowstone. C. The gradient would be the same in both places. D. The gradient would be higher under Yellowstone.