Why are skies clear in the eye of a hurricane?

a. ?Warm air is rising.
b. ?Warm, dry air is descending.
c. ?Cold air is rising.
d. ?Cold, dry air is descending.
e. ?Any moisture is flung to the edge of the eye wall by centrifugal forces.


ANSWER: d

Environmental & Atmospheric Sciences

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A 10-kg block is pushed across a horizontal surface with a horizontal force of 20 N against a friction force of 10 N. The acceleration of the block in meters per second squared is

A) 1. B) 2. C) 5. D) 10. E) none of the above

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A) ?more dense; weigh more B) ?less dense; weigh less C) ?more dense; weigh less D) ?less dense; weigh more

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Collectively, the San Andreas fault system of California is a(n) ________.

A. reverse fault B. oblique fault C. right lateral strike-slip fault D. normal fault E. left lateral strike-slip fault

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