Which of the following rocks would be the best aquifer?
a) shale
b) clay
c) non-fractured basalt
d) sandstone.
Ans: d) sandstone.
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When the Kelvin wave hits the coast of South America,
A) the thermocline is at a much more shallow level as cold water is concentrated at the surface. B) the thermocline is found much deeper as warm water is concentrated at depth. C) the thermocline is at a much more shallow level as warm water is concentrated at depth. D) the thermocline is at a much more shallow level as cold water is concentrated at depth.
The mass flow of ocean water that is driven by wind or gravity is referred to as ocean ____
A) waves B) ENSO events C) currents D) tides
Which subsystem of Earth supplies heat for convection in the mantle?
A)atmosphere B)hydrosphere C)biosphere D)core E)lithosphere
Using Figure 15.24 in your textbook, what was the overall elevation change of Mount St. Helens' peak as a result of the 1980 eruption?
A) a decrease of 400 m B) a decrease of 900 m C) it stayed the same D) an increase of 100 m