Across
- 2. "thunderhead" cloud
- 6. are five precautions you should take during a thunderstorm?
- 7. the calm region of very low air pressure in the center of a tornado
- 12. water vapor that condenses and forms frozen water on the ground
- 14. type of snow, falling ice crystals melt slightly, stick, and freeze together into snowflakes
- 15. the process in which water vapor leaves the air and changes into liquid water
- 17. the amount of water vapor that the air can hold at a given temperature
- 19. this cloud family has layers of flat clouds
- 22. what is the broad, flat top of a cumulonimbus cloud called
- 23. when opposite electrical charges build up in very tall clouds this is produced
- 24. sheets of clouds that often produce rain
- 26. air is saturated when the humidity of the air is this percentage
- 29. an ice crystal in a cloud becomes too heavy, falls, melts, and lands on the earth as liquid water
- 31. of the earth's axis, different seasons are caused by this
- 32. the imaginary line running through the earth from North Pole to South Pole
- 33. falling ice crystals melt into raindrops, then refreeze and land on earth as tiny pieces of ice
- 36. the thin channel of charged air through which a lightning bolt can travel
- 37. clouds made of very small ice crystals
Down
- 1. warm air is this compared to cool air
- 3. lightning bolts that do not come in contact with the ground but remain within the cloud
- 4. if a tornado has been spotted, meteorologists issue this
- 5. water vapor that condenses to form liquid water on the ground
- 8. the boundary between two air masses
- 9. scientists who study the weather
- 10. a line, the row of thunderheads that builds up in the front of advancing cold air
- 11. this cloud family has puffy, bulgy clouds
- 13. the rate the earth's surface spins at in mph
- 16. term used to describe a cloud from which rain is falling
- 18. a small piece of ice is tossed up and down inside a cloud, forming several layers of ice, until it is too heavy and falls to earth
- 19. basic cause of all weather
- 20. humidity can be the same percentage at different temperatures, meaning that the air is holding as much water vapor as possible at that temperature, but that does not mean the same amount of vapor is being held. The warmer the air is, the more water vapor it can hold.
- 21. this family wispy, curly clouds very high in the atmosphere
- 25. the type of storm that packs the most destructive power into the smallest space
- 27. the lowest possible temperature at which air is able to hold all of its water vapor
- 28. this is where the air that we live in receives most of its warmth from
- 30. places include houses and cars, if outside avoid tall objects, keep away from both high ground and open flat areas, keep away from tall objects like trees, avoid being in or near water, do not use the telephone or electrical appliances
- 31. the rapid expansion of superheated air causes these shock waves
- 34. winds are produced as a result of differences in this
- 35. type of rain falling ice crystals melt, hit the earth as liquid rain, but refreeze as soon as they land