Ch. 23 Holt Earth Science

Where does the heat come from that warms the air and leads to cloud formation?

Convection currents bounce rain drops up & down, coating them in ice layers that fall down

What kind of cloud is this?

Water vapor that is condensed near Earth’s surface

Drops grow how many times bigger before they fall as precipitation?

The clouds will form __ from the condensation level

When cool air moves over inland water (rivers, lakes, etc.), cools and condenses?

Fluffy clouds that look like piles or heaps of cotton

Clouds that form a layer

Clouds found at middle elevations

What kind of cloud is this?

When air masses are pushed up by more dense air masses

Water vapor condenses as the air cools

When air loses heat by radiation (cold ground), water vapor condenses; in low places?

The process that makes the temperature of an air mass drop as it rises and expands

Adding freezing nuclei or condensation nuclei to a cloud to make it rain is called cloud __

Clouds that make rain or precipitation

Where does the water in a cloud come from?

As they fall, smaller droplets combine to make a larger droplet.

When a substance is cooled below its freezing point without changing state.

When air rises, what happens to the air pressure?

When the temperature of an air mass drops as the air mass moves over a cold surface

The altitude at which condensation begins

Moisture that falls from the air to Earth’s surface:

This is the name of the radar used to measure the intensity of precipitation

When 2 different air masses meet, the air temperature cools below the condensation point, then

Clear ice pellets formed when rain falls through freezing air

This instrument is used to measure the amount of snowfall.

This instrument is used to measure the amount of rainfall.

Clouds that are found at high elevations

Solid particles in the atmosphere on which the water condenses

Fog formed when warm, moist air moves over a cool surface; it's often found on coasts

The rate or speed at which air temperature changes as it rises

Collections of small water droplets or ice crystals suspended in the air

If the air pressure drops and molecules move apart, what happens to the air temperature?

What kind of cloud is this?