How does glacial ice form?
A) Frigid conditions cause direct freezing of atmospheric water vapor onto land surfaces.
B) Melting snow accumulates in a basin and is refrozen as the climate cools.
C) Sea ice becomes attached to land surfaces and develops into glacial ice.
D) Snow is retained for many years and compacted into ice by overlying snow.
D
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If the Earth was in a warming trend, which of the following processes would most likely act as a negative feedback mechanism?
A. decreasing the amount of cloud cover around the Earth B. increasing the carbon dioxide content of the air C. increasing the snow cover around the Earth D. increasing the water vapour content of the air
The distance wave-producing winds blow over a continuous body of water is the:a
wavelength. b. trough. c. height. d. fetch. e. velocity
What sedimentary structure(s) can you identify in the above image?
A) Ripplemarks and graded bedding B) Graded bedding C) Ripplemarks D) Cross-bedding and graded bedding
What is the main energy source for the hydrologic cycle?
a. evaporative cooling b. greenhouse effect c. gravity d. solar energy e. natural gas