Quiz on Air Masses and Fronts
Terms in this set (22)
Name the four major types of Air Masses in North America
what is an "air mass"?
An air mass is a huge body of air that has similar temperature, humidity and air pressure at any given height
Tropical air is?
Warm and is low pressure
Continental air is?
Cold and is high air pressure
Maritime air masses form over what?
Over oceans and are humid
Continently air masses form over?
Land and are dry.
In the continental US, air masses are commonly moved by what?
the prevailing westerlies and jet streams
What is a front?
The boundary where two air masses with different temperatures and densities meet.
Name the four types of Fronts
How is a "cold front" formed?
Forms when cold air moves underneath warm air forcing the warm air to rise
How is a "warm front" formed?
Forms when warm air moves over cold air. They move slowly and bring humid air.
how is a "stationery front" formed?
When cold and warm air masses meet but neither one has enough force to move the other. May cause clouds and rain.
How is an "occluded" front formed?
Forms when a warm air mass is caught between two cooler air masses. The warm air is "occluded" or "cut off" from the ground. May cause clouds and precipitation.
Scientists classify air masses by
What type of air mass is Warm and Humid?
What type of air mass is Cool and Humid?
What type of air mass is Warm and Dry?
What type of air mass is Cold and Dry?
What is a "fast moving warm air mass that overtakes a slowly moving cold air mass"?
What is a "warm air mass caught between two cooler air masses"?
What is a "rapidly moving cold air mass the runs into a slow moving warm air mass"?
What is when a "cold air mass and a warm air mass meet and remain stalled over an area"?
Stationary Front (Stationary is "To Stay")
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