Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Weather Section 2
Air Mases and Fronts
| Question | Answer |
|---|---|
| causes changes in the weather | the movement and interaction of air masses |
| a large body of air that has similar temperature and moisture throughout | air mass |
| (T), forms over the tropics, warm air | tropical air mass |
| (m), forms over water, wet air | maritime air mass |
| (c), forms over land, dry air | continental air mass |
| (P), forms over the polar regions, cold air | Polar air mass |
| northern Canada, North Atlantic Ocean, North Pacific Ocean | places where polar air masses form and cause cold winter weather in the U.S. |
| A warm air mass that influences the weather in the U.S. and develops over land | continental tropical (cT) |
| air masses that cause hurricanes and thunder storms that occur on the East Coast and in the Midwest | maritime tropical (mT) |
| What happens when two types of air mases meet | warm air rises |
| The boundary between air masses of different densities and usually different temperatures | a front |
| A warm air mass that moves over a cold, denser air mass | warm front |
| A warm air mass that is caught between two colder air masses | occluded front |
| A cold air mass that meets a warm air mass, but the two remain separated | stationary front |
| A cold air mass that moves under a warm, less dense air mass | cold front |
| causes thunderstorms and heavy rain | cold front |
| causes drizzly rain, and then clear, warm weather | warm front |
| causes cool temperatures and large amounts of rain and snow | occluded front |
| stationary front | causes many days of cloudy, wet weather |
| An area in the atmosphere that has lower pressure than the surrounding areas, with winds spiraling toward the center is | a cyclone |
| A rotation of air around a high pressure center is called | an anticyclone |
| when colder, dense air spirals out of the anticyclone, and moves toward an area of low pressure | How a cyclone is formed |
| How a cyclone affects the weather | It causes stormy weather |
| How an anticyclone affects the weather | It causes dry, clear weather |
Created by:
chemingway
Popular Science sets