At the equator,the altitude of the 500 mb level is always larger than it is at the north pole because
A)the air usually has higher pressure at the equator
B)the air is always denser at the equator
C)the air is always warmer at the equator

Question

Quizplus · Accepted Answer

The altitude of the 500 mb level is a measure of the height where the pressure is approximately 500 mb (millibars). At the equator, the air is always warmer due to the direct overhead rays of the sun, causing the air to expand and occupy more space. This leads to lower atmospheric pressure and hence, a higher altitude of the 500 mb level. At the north pole, the air is colder and denser, causing higher atmospheric pressure and a lower altitude of the 500 mb level. Therefore, the best choice is C, where it indicates that the air is always warmer at the equator.

At the Equator,the Altitude of the 500 Mb Level Is