Air Masses/Fronts
Clouds
Processes
Precipitation
Vocabulary
100

This is an air mass that is cold and dry.

What is continental polar?

100

These are lens-shaped clouds that often form near mountains.

What are lenticular clouds?

100

This process is usually responsible for cloud formation.

What is adiabatic cooling?

100

This consists of large drops of liquid water.

What is rain?

100

This is when an area is receiving less precipitation than normal.

What is meteorological drought?

200

This is an air mass that forms over the ocean.

What is a maritime air mass?

200

This is a clous with a low-level base and a top composed of ice crystals.

What is cumulonimbus?

200

This is the process whereby plants release water into the atmosphere from the leaves.

What is transpiration?

200

This forms as balls of ice are blown by a thunderstorm updraft. It also includes layers of glaze and rime.

What is hail?

200

This is a lack of precipitation that affects an area's crops.

What is an agricultural drought?

300

This is an air mass that forms over the Caribbean Sea.

What is maritime tropical?

300

This is the least common type of high-level cloud.

What is cirrocumulus?

300

This is the process whereby frost is formed.

What is deposition?

300

This is made of ice crystals, usually in geometric shapes.

What is snow?

300

This is water vapor whose temperature has dropped below the freezing point.

What is supercooled?

400

This is the type of front that a frontal cyclone begins with.

What is a stationary front?

400

These mid-level clouds are known for covering the sky and producing steady precipitation.

What are nimbostratus?

400

This is the process in which a liquid becomes a gas.

What is evaporation?

400

This consists of drops of liquid water smaller than raindrops.

What is drizzle?

400

This is the movement of water from the air to the earth's surface and back.

What is the hydrological cycle?

500

Two unmoving air masses of different temperatures form this type of front.

What is stationary?

500

These are billowy, low-level clouds with flat bases.

What are cumulus clouds?

500

This is the process in hwich rain forms from melted snowflakes.

What is Bergeron-Findeisen process?

500

This is an extended period of heavy snow and high wind.

What is a blizzard?

500

This is an area of the surface over which an air mass formed.

What is source region?