Across
- 5. an overflowing of water in a normally dry area
- 6. The change in state from a gas to a liquid
- 7. the average annual conditions of temperature, precipitation, winds, and clouds in an area
- 8. a high pressure center of dry air
- 10. fluffy, white clouds, usually with flat bottoms, that look like rounded piles of cotton
- 13. an instrument used to measure relative humidity
- 14. The amount of water vapor in a given volume of air
- 15. Movement of water among Earth's atmosphere, oceans, and land surface through evaporation, condensation, and precipitation
- 16. bands of high-speed winds about 10 kilometers above Earth's surface
- 17. the areas between the tropical and polar zones
- 21. wispy, feathery clouds made of ice crystals that form at high levels
- 22. any form of water that falls from clouds and reaches Earth's surface as rain, snow sleet, or hail
- 23. a long period of low precipitation
- 26. the temperature at which condensation begins
- 29. the climate of some coastal regions, with relatively warm winters and cool summers
- 31. a huge body of air that has similar temperature, humidity, and air pressure at any given height.
- 32. warm air masses that form in the tropics
- 33. the climate of the centers of continents, with cold winters and warm or hot summers
- 34. The process by which molecules at the surface of a liquid absorb enough energy to change to a gas
- 35. the side of a mountain range that faces away from oncoming wind
Down
- 1. cut off, as in a front here a warm air mass is caught between two cooler air masses
- 2. Is a gradual increase in the average temperature of the atmosphere, thought to be caused by an increase in greenhouse gases from human activities
- 3. a cold air mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high air pressure
- 4. clouds that form in flat layers and often cover much of the sky
- 9. a swirling center of low pressure
- 11. a humid air mass that forms over oceans
- 12. The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature
- 18. gases in the atmosphere that trap energy
- 19. a dry air mass that forms over land
- 20. the area near the equator between about 23.5 degrees north latitude and 23.5 degrees south latitude
- 24. an instrument used to measure precipitation
- 25. the areas near both poles from about 66.5 degrees to 90 degrees north and 66.5 degrees to 90 degrees south latitude
- 27. the side of a mountain range that faces the oncoming wind
- 28. coal, oil, or natural gas that forms over millions of years from the remains of ancient organisms; burned to release energy
- 29. sea or land breeze over a large region that changes direction with the seasons
- 30. the boundary where unlike air masses meet but do not mix
