The Older Dryas and Younger Dryas stages represented ________.
A. two cooling stages during warm-up from the last major glacial advance
B. periods of dry climate in the last 20,000 years
C. two of the more abrupt warming stages during the last glaciation
D. one warming stage and one cooling stage during the last glaciation
Answer: A
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Which of the following describes why a fluffy covering of snow is able to protect sensitive plants and their root systems from damaging low temperatures?
A. Snow is a good insulator. B. Melting snow releases latent heat. C. Snow is a good emitter of infrared energy. D. Snow is a good reflector of sunlight.
After movement, the interior parts of ice slabs and continental plates
A) may be stretched. B) may be rippled up to form hills, ridges, and mountains. C) may be cracked to form crevices. D) remain unchanged.
In downtown Philadelphia, water in storm drains most likely came from
A) sinks. B) toilets. C) lawns and streets. D) bathroom showers.
Using the seismic gap method, scientists identify section "C" of a fault as a seismic gap. Which of the following possible answers correctly states what this means?
A. Section "C" is the least-likely section along this fault to have the next major earthquake. B. The next earthquake in section "C" is predicted to be rather weak. C. The next major earthquake will occur in section "C" of the fault. D. Section "C" will have the largest surface ruptures during the next earthquake along this fault. E. The next major earthquake will likely occur in section "C" but it is not a guarantee.