Water Vapor in the air Clouds Water falling from the sky Air Masses Fronts

The changing of liquid water to gas (water vapor) is called:_______________

evaporation

The amount of water vapor in the air is called its ___________.

humidity

Cold air can hold ________ water vapor than warm air. A. more B. less C. the same amount of

B. less

Definition: The amount of material something can hold.

capacity

The amount of water vapor the air is holding compared to the amount it can hold is called the: ___________ humidity.

relative humidity

Clouds are made of __________.

Water droplets and / or ice crystals

Clouds that form near the ground are called ___.

fog

Large, anvil shaped thunder clouds are called _________.

cumulonimbus

Thin feathery clouds made of ice crystals are called: __________ clouds.

cirrus

The process of water vapor sticking together to form drops is called: __________.

condensation

Water that falls back to Earth is called ___________.

precipitation

Precipitation that is lumps of ice is called: ____.

hail

Ice crystals that fall to the ground are called: _____.

snow

Precipitation can be liquid or _______.

solid

What is sleet and how does it form?

Rain that freezes as it falls through cold air near the Earth.

Polar air masses are _____ air.

cold

Tropical air masses are ____ air.

warm

Continental means the air mass forms over ____.

land

Maritime means the air mass forms over the ______.

oceans

Name the four types of air masses.

Maritime polar, maritime tropical, continental polar, continental tropical

What is a front?

Boundary between air masses

Fronts bring ________ in weather.

changes

Cold fronts push ______ warm air.

under

Name the four types of fronts.

Cold, warm, stationary and occluded.

_______ fronts bring very little change in weather.

Stationary