Comprehension Check 5-10

There is always water vapor in the air.

Warm, moist air is hotter than cool air.

As it rises away from the earth's surface, warm air begins to cool.

Cool air cannot hold as much water vapor as warm air can.

When water vapor in the air cools and turns into tiny droplets of liquid water, condensation takes place.

Water in the air condenses on tiny pieces of precipitation.

Four kinds of precipitation are rain, snow, sleet, and hail.

Water vapor that condenses on the grass at night is called dew.

Tiny crystals of ice that are made of frozen water vapor are frost.