Frost action is most effective ____
A)in high mountains
B)where the temperature rarely drops below freezing
C)where Earth materials are permanently frozen
D)where temperature has little fluctuation
E)in low canyons
A
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Suppose you take a trip during the summer from Ontario to Alberta. Which of the following describes the afternoon cumulus clouds you likely observe as you travel west?
A. The clouds have higher cloud bases. B. The clouds disappear. C. The clouds form earlier in the day. D. The clouds are larger.
The volume of water that a stream carries per unit of time is its discharge
Indicate whether the statement is true or false.
When warm, moist air mixes with cold air:
A) the cold air undergoes adiabatic expansion. B) cloud formation can result. C) the temperature of the mixed masses is usually that of the warm mass. D) the specific humidity of neither mass is affected.
Coronas can be easily distinguished from 22? halos because:
A) they do not have clearly identifiable rings. B) they only occur when it is raining. C) the color sequence is reversed, with the bluish-white color on the inside. D) they never occur around the moon.