Much of the water we cannot see is a gas called ______________.

Water vapor in the air changes to ______________ when it cools.

Is usually the same temperature as the air around it.

The air always has this.

Above the air's temperature.

Created when water boils.

Tiny water droplets hanging in the air.

Water on earth constantly moves in a ______________.

The process of changing liquid water into water vapor.

The change from water vapor to liquid water.

Water that falls as rain, snow, sleet, or hail.