Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
Cold front |
A fast-moving cold air mass overtakes a warm air mass |
|
|
Warm front |
A warm air mass over-takes a slow moving cold air mass |
|
|
Stationary |
Cold and warm air masses meet, but neither can move the other |
|
|
Occluded front |
A warm air mass is caught between two cooler air masses |
|
|
Polar air mass |
Type of air mass that forms north of 50 degrees north latitude and south of 50 degrees south latitude (cold) |
|
|
Tropical air mass |
Type of air mass that forms in the tropics. It is warm with low air pressure |
|
|
Maritime air mass |
Type of air mass that forms over ocean and can be very humid |
|
|
Continental air mass |
Type of air mass that forms over land and can be dry |
|
|
Prevailing westerlies |
Major wind belts that generally push from west to east |
|
|
Jet streams |
High-speed wings that are in the prevailing westerlies and are about 10 kilometers above earths surface |
|
|
Fronts |
Huge air masses that move across the land and oceans and collide with each other |
|
|
Cyclone |
A swirling center of low air pressure |
|
|
Anticyclones |
High-pressure centers of dry air |
|
|
Coriolis effect |
The effect of earths rotation on the direction of winds and currents in the ocean |
|
|
Wind |
Moving air caused by the heating of the sun and the earths rotation |
|
|
Temperature and moisture |
The characteristics that determine the type of air masses |
|
|
Maritime tropical |
A warm and humid air mass |
|
|
Maritime polar |
A cold and humid air mass |
|
|
Continental tropical |
A hot and dry air mass |
|
|
Continental polar |
A cold and usually dry air mass |
