Weather Systems and Patterns Vocab

1. The movement of water from one location to another, driven by wind, water density differences, and tides.
6. When temperature differences cause liquids and gasses to expand and move. The warmer, less dense areas continually rises, and the colder more dense areas continually sinks, creating a cyclical current.
11. Indicated on a weather map by a line with red semi-circles. Brings light winds and precipitation, followed by warmer weather.
12. An area where two air masses with different temperatures and pressures meet.
13. The conditions of the atmosphere at a particular time and place.
14. The amount of water vapor in the air.

2. A measure of the weight of the atmosphere on a given area of the surface of the Earth.
3. A current of air, moving in a particular direction, caused by the pressure differences between surrounding air masses.
4. A blanket of mixed gasses that are held to the Earth by gravity.
5. Indicated on a weather map by a line with blue triangles. Bring severe storms and precipitation, followed by colder weather.
6. The average year-after-year conditions of temperature and precipitation.
7. Rain, snow, sleet, or hail.
8. A body of air that has about the same temperature and humidity throughout.
9. The effect of the Earth’s rotation on the path of air and water; causes the path to curve.
10. A rapidly rotating storm that forms over the ocean due to low pressure and high temperature. Also called Tropical Cyclone or Typhoon in different regions.