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8th Grade
Weather & Climate
| Question | Answer |
|---|---|
| air mass | large body of air with a relatively uniform temperature and humidity |
| cold front | weather front that occurs when a cold, dense air mass moves in and replaces a stationary warm air mass |
| global winds | large scale wind patterns that circulate around Earth due to the combined effects of Earth's rotation, solar heating, and the distribution of land and water |
| high-pressure system | area where the air pressure is higher than its surroundings, resulting in dry air, mild winds, and clear skies |
| jet stream | narrow band of strong air currents in the upper levels of the atmosphere that blow from west to east |
| Low-pressure system | area where the air pressure is lower than its surroundings, resulting in turbulent, inclement weather |
| stationary front | type of weather front that occurs when a cold and warm front meet, but neither progresses |
| trade winds | steady, prevailing winds that blow from east to west between 0° and 30° north and south of the equator |
| warm front | type of weather front that occurs when a warmer, less dense air mass moves in and replaces a stationary cold air mass |
| weather front | boundary where two or more air masses meet |
| westerlies | prevailing winds that blow from west to east between 30° and 60° north and south o the equator |