The key element in creating avalanche danger is ____
a. ?a frozen “cornice” or overhang
b. ?a frozen “cornice” or overhang
c. ?recent freezing or packing of the surface layer
d. ?a source of vibration
e. ?a weak layer in the snowpack
ANSWER: e
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If a light signal and a radio signal were emitted simultaneously from a distant planet, the first to reach Earth would be the
A. light signal. B. radio signal. C. both the same time D. need more information
What is a kleptocracy?
A) an African nation that has recently achieved independence from its colonial masters B) an African democracy that is led by representatives from all its native tribes C) a state where corruption is so institutionalized that large percentages of the country's wealth is siphoned off by politicians and government bureaucrats D) a state that allies itself with OPEC E) an African nation that is communist ruled
The most destructive earthquake waves are
A. P-waves. B. aftershock waves. C. waves traveling from foci deep in Earth's interior. D. S-waves.
Soil _______________ is a slow downslope movement
Fill in the blank with correct word.