Snow does not immediately melt away on a mild spring day because:
A) snow is more resistant to melting when it's been sitting on the ground for a long time.
B) shortwave radiation from the sun is absorbed but not re-radiated as longwave.
C) the high albedo of the snow keeps air temperatures cooler.
D) snow allows more longwave radiation to be absorbed by the air.
C
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Which characteristic of air provides a measure of the average speed of the atoms and molecules?
A) pressure B) temperature C) density D) evaporation
The general term for all glacial deposits is
A) alluvium. B) erg. C) glacial drift. D) talus.
If Si is the average salt content of the incoming seawater and So is the average salt content of the exiting surface water in an estuary, the fresh water in the exiting mixed water is ________.
A. So/(Si - So) B. (Si - So)/So C. (So - Si)(Si - So) D. Si/(Si - So) E. (Si - So)/Si
Hydrothermal vents provide a unique deep sea environment that supports abundant life because ________
A) the density of the seawater is less and this allows organisms more mobility B) food carried in the hydrothermal fluids provides a hospitable environment to support abundant life C) the hydrothermal vents support photosynthesis so there is abundant food D) the heat from the hydrothermal vents provides a more hospitable environment to support life