Why does air cool as it rises?Group of answer choicesair compresses as it risesair expands as it risesthe humidity of the air decreasesthe humidity of the air increasesair loses its moisture

Air cools as it rises primarily due to the process of adiabatic cooling. Here's a step-by-step explanation:

1. Initial State: At ground level, air is at a higher pressure because of the weight of the air above it.

2. Air Rises: When air rises, it moves into areas of lower pressure (since there is less air above it).

3. Expansion: As the air rises into these lower pressure areas, it expands. This is because there are fewer air molecules pushing on it from all sides.

4. Cooling: This expansion process requires energy, which the air parcel obtains by converting some of its internal (thermal) energy into work. As a result, the temperature of the air decreases, which is why air cools as it rises.

5. Humidity and Moisture: As the air cools, its capacity to hold water vapor decreases. If the air cools enough, the water vapor can condense into tiny liquid water droplets, forming clouds. This is why the humidity of the air can decrease as it rises and cools.

So, the correct answer from the given choices would be "air expands as it rises" and "air loses its moisture".