Across
- 2. A dry air mass that forms over land.
- 4. The process by which molecules at the surface of a liquid absorb enough energy to change into a gas.
- 8. the change of state from a gas to a liquid.
- 9. A humid air mass that forms over oceans.
- 11. Elevation above sea level.
- 12. A swirling center of low air pressure.
- 16. A rapidly whirling, funnel-shaped doud that reaches down to touch Earth's surface.
- 19. A line on a weather map that joins places that have the same air pressure.
- 21. The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature.
- 24. Winds that blow over short distances.
- 25. The amount of water vapor in a given volume of air.
- 28. A small storm often accompanied by heavy precipitation and frequent thunder and lightning.
- 31. A tropical storm that has winds of 119 kilometers per hour or higher.
- 33. An instrument that measures changes in air pressure without using a liquid.
- 35. The distance in degrees north or south of the equator.
- 37. The boundary where unlike air masses meet but do not mix.
- 39. An instrument used to measure relative humidity.
- 40. An instrument used to measure changes in air pressure.
- 41. The continual movement of water among Earth's atmosphere, oceans, and land surface through evaporation, condensation, and precipitation.
Down
- 1. Winds that blow steadily from specific directions over long distances.
- 3. A line on a weather map that joins places that have the same temperature.
- 5. A "dome" of water that sweeps across the coast where a hurricane lands.
- 6. Scientists who study the causes of weather and try to predict it.
- 7. The flow of air from a land to a body of water.
- 10. The ratio of the mass of a substance to its volume.
- 13. The effect of the Earth's rotation on the direction of winds and currents.
- 14. A high-pressure center of dry air.
- 15. A cold air mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high air pressure.
- 17. A sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground.
- 18. An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its open end resting in a dish of mercury.
- 20. Cut off, as in a front where a warm air mass is caught between two cooler air masses.
- 22. The flow of cooler air from over an ocean or lake toward land.
- 23. A huge body of air that has similar temperature, humidity, and air pressure at any given height.
- 26. Bands of high-speed winds about 10 kilometers above Earth's surface.
- 27. The horizontal movement of air from and area of high pressure to an area of lower pressure.
- 29. A measure of cooling combining temperature and wind speed.
- 30. Moving away temporarily from an area about to be affected by severe weather.
- 32. A warm air mass that forms in the tropics and has low air pressure.
- 34. The pressure caused by the weight of a column of air pushing down on an area.
- 36. A violent disturbance in the atmosphere.
- 38. An instrument used to measure wind speed.