The following is an example of a disadvantage of the use of wind power for generating electricity:
A) It is associated with high levels of pollution.
B) The wind is not constant even in the windiest areas.
C) It can never be cost competitive with other energy sources.
D) It is impractical in the United States.
E) The voltage is not compatible with that of standard transmission lines.
Answer: B
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The ground shaking produced by large earthquakes is not only ________, but takes a ________ time than shaking produced by slippage along small fault segments
A) stronger; longer B) stronger; shorter C) weaker; longer D) weaker; shorter
A tsunami _______________ is issued when an earthquake of magnitude 7 or greater is detected somewhere around the Pacific Ocean
Fill in the blank with correct word.
Which of the following is true about how contamination moves in groundwater?
A. Contamination moves opposite to the direction of groundwater flow. B. Contamination spreads out as it moves, forming a widening plume. C. Contamination moves up the slope of groundwater. D. Contamination introduced into the ground does not move.
Which of the following is not a characteristic of living things?
A) Living things convert energy from one form to another. B) Living things develop and grow. C) Living things allow their internal environments to match conditions in the external environment. D) Living things are part of populations that evolve.