The method that is used most frequently to investigate sediment and rock layers of the sea floor is ________
A) direct observation
B) drilling
C) light waves
D) satellite observation
E) sound waves (specifically seismic reflecting profiling)
E
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Much of the increasing global need for electricity can be met by solar sources because
A) about 70% of electrical demand occurs when the sun is shining. B) modern battery technology now makes electrical storage cheap and efficient. C) only about one square meter of photovoltaic cells are needed to heat a home. D) even at night most solar power systems run at about 50% of normal capacity.
What type of chemical weathering is enhanced by acid rain?
A. oxidation B. dissolution C. hydrolysis
The sivapithecids eventually evolved to modern humans. Indicate whether the statement is true or false
Which of the following is NOT a way(s) that an oil field might impact people living nearby?
A. increasing job opportunities B. increasing likelihood of an oil spill C. increasing likelihood of volcanic eruptions D. improving the local economy