Science test fronts

The two characteristics of air masses.

Form when two different large air masses meet and usually bring changes in the weather.

Marked on weather maps as a blue line with triangles on it.

The capital letter H stands for this on a weather map.

The name given to a scientist that studies weather.

An air mass that is dry and forms over land.

A type of front made of cold, dense air. Rain, snow, thunderstorms and sometimes tornadoes are caused by this front. Usually, the precipitation does not last very long.

Marked on a weather map as a red line with half circles on it.

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

Carries weather instruments as far up as the stratosphere.

An air mass that forms over the polar regions and is cold.

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

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

Represented by a small circle that is completely white (not colored in).

An air mass that forms over the tropics and is warm.

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.

The type of weather forecast that is within the next 5 days.

Lines that connect areas with the same air pressure on a map.

Often represented by asterisks or stars on a weather map.

The layer of the atmosphere where weather satellites are located.

An air mass that is wet and forms over water.

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 precipitation.

Marked on the weather map as a purple line with half circles and triangles on the same side.

Lines that connect areas with equal temperature on a weather map.

States that a small change or disturbance, such as a butterfly flapping its wings, may play a part in the weather outcomes in the future.