HW 5-2

Molecules in warm air have (a)   than molecules in cold air.

• more kinetic energy

• less kinetic energy

Hot air rises and cold air sinks.

• True

• False

The air near the surface of the Earth is warmer than the air higher in the atmosphere.

• True

• False

The molecules that make up cold air are (a)   than the molecules that make up warm air.

• more dense
• less dense

Warm air is (a)   dense than cool air.

• less
• more

Warm air can hold (a)   water vapor than cold air.

• more

• less

If the temperature stays the same and the air becomes more moist, the relative humidity will

• decrease

• increase

• remain constant

• fluctuate

If the relative humidity is 50% that means....

• the air holding half as much water vapor as it can

• the air is filled to capacity with water vapor

When air cools to its dew point (a)   occurs.

• evaporation

• condensation

Condensation occurs when the relative humidity is (a)   .

• 50%

• 100%

• Relative humidity has no impact on condensation.