Question

How do air pressure and precipitation determine the weather in a certain area? a When the air pressure is higher, the air is cooler, and it is less likely for precipitation to fall. b When the air pressure is lower, it is harder for evaporation to occur and for the rain to form. c When the air pressure is higher, the humidity is higher, and the chance of precipitation is lower. d When the air pressure is higher, the air is warmer, and the chance of precipitation is higher.

Answer 1

Answer:

First humidity of air is not absolute. You hear from radio or TV news that humidity is 40% today and they report it as if it is a temperature with an absolute scale. It is not. That percentage you hear is actually the ratio of dissolved moisture of air to saturation water partial pressure.So what does dissolved water mean. Imagine water is sugar and air is a cup of coffee. when you pour sugar into coffee and stir, some of it dissolves and some of it does not and stays swirling in the liquid and maybe even settling on the bottom. Water is the same in air. Some of it is water vapor dissolved (molecularly dispersed) in the air and some of it is in second phase (liquid droplets and any clumps of water suspended in air).