Across
- 3. the source of nearly all the heat energy that warms the earth
- 6. fast currents of wind that flow at high altitudes
- 7. temperature drops 3 1/2 every one thousand feet traveled up a mountain
- 10. winds over the arctic zone
- 14. hot, rising air
- 16. soil that remains frozen all year long
- 17. the type of plants that grow in each region depending on climate
- 19. latitude lines that lie between lines 23 1/2 and 66 1/2
- 20. winds in the tropics
- 21. water held underground in the soil
- 24. cold regions near the poles and support limited vegetation
- 25. the process of the fall of water to earth
- 26. type of precipitation caused by the rising of warm air over a hot surface
- 27. areas of the earth barren most of the year
- 28. the process of when water vapor loses its heat and changes back into a liquid form
- 30. forests found in the tropics
- 35. the rotation of the earth around its axis that greatly influences wind direction
- 37. describes any large region where distinct population of plants and animals are found leaving
- 38. rain falls all year
- 39. forests found in Mediterranean climate
- 40. North American fertile grasslands
- 41. the typical weather in a region over a long period of time
- 42. type of precipitation caused when a cold front meets a warm front
- 44. type of precipitation caused by the lifting of moist air over a mountain barrier
- 46. giving off water vapor through leaves, stems, and flowers
Down
- 1. non windy, calm areas near the equator
- 2. where the axis of the earth always tilts
- 4. the most obvious evidence of the sun's influence
- 5. winds over the temperate zone
- 8. the process of warm air holding water vapor
- 9. cold all year round
- 11. the world's richest farmland
- 12. the amount of moving cells of air from the equator to the poles
- 13. forests found in cold, harsh subpolar regions
- 15. latitude lines that lie above 66 1/2 degrees
- 18. latitude line that lies between the equator and 23 1/2 degrees
- 22. forests found in moderate climates and lose their leaves
- 23. air that has a similar temperature and moves together
- 29. covers most of western Europe
- 31. how warm and cold air masses move over the earth
- 32. the process of when water absorbs enough hear it changes into water vapor
- 33. annual precipitation is 10 inches or less
- 34. cold, heavy air
- 36. support evergreen trees with less severe summers
- 43. caused by the movement of the air that has been heated by the sun
- 45. the circular pattern of the currents flow