Air Masses
Fronts
Lines on a Map
Symbols
Water Cycle
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
The capital letter H stands for this on a weather map.
What is a high pressure center?
100

The stage when water falls from clouds as rain, snow, sleet or hail.

What is precipitation?

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 capital letter L stands for this on a weather map.
What is a low pressure center?
200

The process that forms clouds when water vapor cools and turns into little water droplets.

What is condensation?

300
An air mass that forms over the polar regions and is cold.
What is a polar air mass?
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
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?
300

An area with high pressure air above them is receiving what kind of weather conditions?  

What are sunny, clear skies?

300

After water precipitates it can flow over the surface. 

What is run-off?

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

Convection

What is warm air rising and cool air sinking

400

An area with low pressure air above them is receiving what kind of weather conditions? 

What are cloudy skies?

400

Bodies of water such as oceans, lakes, or even groundwater. 

What is collection?

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
Marked on the weather map as a purple line with half circles and triangles on the same side.
What is an occluded front?
500

The definition of air pressure.

What is the force (weight) of air pushing down on the surface of the Earth. 

500
The stage when water evaporates from plants.

What is transpiration?

M
e
n
u