Which has the greatest momentum?
A. A Mack truck parked in a lot.
B. A tightrope walker crossing Niagara Falls.
C. A dog racing along a street.
D. A mosquito flying at normal speed.
Answer: C
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Indicate whether the statement is true or false.
Which of these regions is high because of subduction of an oceanic plate?
A. 3, Tibet B. 2, East Africa C. 1, Andes of South America D. None of these.
How does a greenhouse work, and why is the analogy of the earth's atmosphere to a greenhouse imperfect?
What will be an ideal response?
Describe how the Earth's ocean accumulated. What aspects of the initial atmospheric conditions prohibited the formation of liquid water? Once in place, how did the water become saline?