Air Masses & Winds
Fronts
Symbols & Lines on a Map
Severe Weather
Weather & Climate
100

The two characteristics of air masses.

What are temperature and moisture?

100
Form when two different large air masses meet and usually bring changes in the weather.
What are fronts?
100
Marked on weather maps as a blue line with triangles on it.
What is a cold front?
100

A prolonged period of extremely hot weather.

What is a heat wave?

100
The name given to a scientist that studies weather.
What is a meteorologist?
200

An air mass that is dry and forms over land.

What is a continental air mass?

200
A type of front made of cold, dense air. Rain, snow, thurnderstorms and sometimes tornadoes are caused by this front. Usually, the precipitation does not last very long.
What is a cold front?
200
Marked on a weather map as a red line with half circles on it.
What is a warm front?
200

A period of reduced rainfall that leads to conditions that are drier than normal over a large area.

What is a drought? 

200

The state of the lower atmosphere in a specific place and at a specific time, including temperature, precipitation, wind, humidity, air pressure, and cloudiness.

What is Weather?

300

A wind that forms because of a large-scale convection current and blows in a belt that circles the planet. Global winds are also called prevailing winds.

What are global winds? 

300
The front that forms when two air masses meet and neither one takes over. Often causes many cloudy days to occur in a row.
What is a stationary front?
300

A capital letter L stands for this on a weather map.

What is a low pressure center?

300

A violent storm in which a rotating funnel of air moves over the ground.

What is a tornado?

300

A region near the poles that has a climate characterized by cold temperatures throughout the year.

What is a polar zone? 

400
An air mass that forms over the tropics and is warm.
What is a tropical air mass?
400
The type of front formed when a large mass of warm air takes over the cooler air mass. Usually produce rain, fog, or snow that lis light but steady.
What is a warm front?
400

Marked on a weather map as a blue line with blue triangles on one side and red half circles on the other side.

What is a stationary front?

400

A winter storm with high winds, heavy falling or blowing snow, and poor visibility.

What is a blizzard

400

The average weather conditions of an area over a long period of time.

What is climate?

500
An air mass that is wet and forms over water.
What is a maritime air mass?
500
The type of front that develops when two cool air masses merge, forcing the warm air to rise and become trapped. Usually brings wind and preciptiation.
What is an occluded front?
500
The capital letter H stands for this on a weather map.
What is a high pressure center?
500

A large, rotating system of clouds and thunderstorms with strong winds that forms over warm ocean water.

What is a hurricane? 

500

 The warming of Earth's surface and lower atmosphere by greenhouse gases.

What is greenhouse effect?

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