Question

Which statements about humidity are true? Check all that apply.

Humidity is the measure of the amount of water vapor in the air.
Warm air holds less water vapor than cold air.
Warm areas promote less evaporation.
Areas with a large amount of surface water have high humidity levels.
Warm tropical areas have very humid air.

Answer 1

Let’s evaluate each statement about humidity to determine which ones are true:

1. **Humidity is the measure of the amount of water vapor in the air.**
- **True.** Humidity refers to the concentration of water vapor present in the air.

2. **Warm air holds less water vapor than cold air.**
- **False.** Warm air can actually hold more water vapor than cold air. This is why warmer climates often have higher humidity levels.

3. **Warm areas promote less evaporation.**
- **False.** Warm areas generally promote more evaporation because higher temperatures increase the rate of evaporation of water.

4. **Areas with a large amount of surface water have high humidity levels.**
- **True.** Areas with significant amounts of surface water, such as lakes and oceans, tend to have higher humidity levels due to increased evaporation.

5. **Warm tropical areas have very humid air.**
- **True.** Tropical regions are typically warm and often experience high humidity due to the substantial evaporation from the warm waters and vegetation.

In summary, the true statements are:
- Humidity is the measure of the amount of water vapor in the air.
- Areas with a large amount of surface water have high humidity levels.
- Warm tropical areas have very humid air.