The chemical product produced by a hydrogen fuel cells is ________
A) acid
B) carbon monoxide
C) water
D) nontoxic ash
E) carbon dioxide
Answer: C
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When a number of earthquakes along in the same general area over the course of a few months or years, the event is referred to as a(n) ________ .
A. seismic batch B. tectonic bundling C. earthquake cluster D. faulting episode E. gap buster
Which of the following are potential sources of destruction that may be caused either directly or secondarily by earthquakes?
A. tsunami B. aftershocks C. fires D. landslides and rock falls E. All of these choices are correct.
Volcanic ash forms when rock particles and lava droplets are ejected skyward.
Answer the following statement true (T) or false (F)
What percentage of the U.S. population derives a portion of its freshwater from groundwater resources?
A) 5 percent B) 15 percent C) 25 percent D) 50 percent E) 75 percent