In the "ice crystal formation" process, precipitation starts because ice crystals ________
A) melt as they fall
B) form from raindrops
C) grow at the expense of raindrops
D) hook together
E) have a low specific heat
Answer: C
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Totality during a solar eclipse is not totally dark because
A. the Moon is directly in front of the Sun. B. of light from the solar corona. C. the Moon is smaller than the Sun. D. most of the Earth is basking in sunlight. E. the line between umbra and penumbra is not sharp.
The angle at which the Sun's rays strike the Earth has a great effect on
A) Earth's seasons. B) the way climate varies with latitude. C) the intensity of solar energy received at Earth's surface. D) all of the above
Why is weathering/erosion such an important part of the rock cycle?
A) Volcanoes form from weathering/erosion. B) Plate tectonics are a result of weather/erosion. C) Crystallization is a result of weathering/erosion. D) In order for sedimentary rocks to be made, weathering/erosion must occur.
In 1962, Rachel Carson published Silent Spring, which dramatized the potential dangers of ________ to food, wildlife, and humans and eventually led to changes in the United States on their use.
Fill in the blank(s) with the appropriate word(s).