Question

state true or false 1 prevailing winds always blow from hot to cold regions 2. the suns rays strikes the surface of the earth uniformly from the equator to the poles

Answer 1

Answer:

Explanation:

HEMISPHERIC PREVAILING WINDS

Since the atmosphere is fixed to the earth by gravity and rotates with the earth, there would be no circulation if some force did not upset the atmosphere's equilibrium.  The heating of the earth's surface by the sun is the force responsible for creating the circulation that does exist.

Because of the curvature of the earth, the most direct rays of the sun strike the earth in the vicinity of the equator resulting in the greatest concentration of heat, the largest possible amount of radiation, and the maximum heating of the atmosphere in this area of the earth.  At the same time, the sun's rays strike the earth at the poles at a very oblique angle, resulting in a much lower concentration of heat and much less radiation so that there is, in fact, very little heating of the atmosphere over the poles and consequently very cold temperatures.

Cold air, being more dense, sinks and hot air, being less dense, rises.  Consequently, the rising warm air at the equator becomes even less dense as it rises and its pressure decreases.  An area of low pressure, therefore, exists over the equator.

Warm air rises until it reaches a certain height at which it starts to spill over into surrounding areas.  At the poles, the cold dense air sinks.  Air from the upper levels of the atmosphere flows in on top of it increasing the weight and creating an area of high pressure at the poles

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Answer 2

1 false

2 true

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