Water in the Atmosphere

The constant movement of water between the surface of Earth and the atmosphere is called:

• the water cycle

• the rock cycle

• the carbon cycle

• the oxygen cycle

The process by which molecules at the surface of a liquid absorb enough energy to change to a gas is called:

• evaporation

• transpiration

• respiration

• condensation

The process by which water vapor from plants is released into the air is called:

• evaporation

• transpiration

• respiration

• condensation

The process by which water vapor changes into liquid water is called:

• evaporation

• transpiration

• respiration

• condensation

For condensation to occur, tiny particles must be present in the atmosphere.

• True

• False

Temperature is not a factor in condensation.

• True

• False

The temperature at which condensation begins is called the:

• dew point

• melting point

• boiling point

• freezing point

As warm air cools, the amount of water vapor it can hold decreases, and the water vapor starts to condense.

• True

• False

Cloud formation is not a result of condensation.

• True

• False

Humidity is the measure of the amount of water vapor in the air.

• True

• False