WEATHER

3. a small storm often accompanied by heavy precipitation, thunder, and lightning.
6. the movement of water between the atmosphere and Earth's surface
9. the process in which liquid water changes to a gas
11. the temperature in which condensation begins
12. humidity the amount of water vapor that is in the air compared to the maximum water that the air can hold
14. scientists who study the causes of weather and try to predict it
15. high pressure centers of dry air
17. front a warm air mass overtakes a slow-moving cold air mass, clouds and precipitation occur.
19. the process in which water vapor (gas) changes into a liquid
20. lines on the weather map that joins places that have the same temperature
23. a dome of water that sweeps across the coast where hurricanes land
25. tropical cyclones that form over warm ocean water

1. violent disturbances in the atmosphere
2. water that falls to Earth as rain, snow, sleet, or hail.
4. a whirling center of low air pressure
5. a fast moving cold air mass overtakes a cold air mass
7. a body of air that has similar temperatures, humidity, and air pressure
8. a gas
10. the boundary where air masses meet
13. air masses that from over land; dry
16. the amount of water vapor in the air
18. an instrument used to measure relative humidity
21. a sudden spark or electric discharge between parts of clouds or between a cloud and the ground
22. a rapidly whirling funnel-shaped cloud that reaches down from a storm cloud to touch Earths surface
24. water that runs over Earths surface to the ocean