The boundary between the crust and the rest of the lithospheric upper mantle is a discontinuity known as the
A) mantle. B) lithospheric layer. C) Moho. D) Gutenberg.
C
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Which of the following is not true of calderas?
A) They are produced by removal of easily eroded pyroclastic materials.
B) They commonly contain layers of volcanic ash and volcanic domes.
C) They are bounded by steep topographic scarps with a generally basin-shaped outline.
D) They form from the collapse of the ground surface into an emptied magma chamber below.
In theory, appropriation bills are meant to
A. Fund current programs and projects B. Avoid and curtail lobbying C. Be authorized to become law D. Change laws through constitutional amendments E. Determine policy
Divergence of air aloft in an air column means increasing pressure below it
Indicate whether the statement is true or false
Which of the following microclimate effects is incorrectly described?
a. The leeward sides of high mountains tend to show relatively dry conditions. b. Oceans and lakes modify temperature extremes. c. Mountains interrupt the flow of prevailing winds. d. Cities tend to have lower temperatures and higher wind speeds than the surrounding countryside. e. The windward sides of high mountains tend to show relatively wet conditions.