Unit 5

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Across
  1. 3. Path the Sun takes across the sky
  2. 4. Longest or shortest day of the year
  3. 6. Boundary above the stratosphere
  4. 8. Energy being taken in by surfaces
  5. 14. Main gas in the exosphere
  6. 15. What particles do to light
  7. 16. What particles do to light energy
  8. 17. Coldest atmospheric layer
  9. 18. How tightly packed air molecules are
  10. 20. Result of Earth’s axial tilt
  11. 22. Gas that makes up about 20% of the atmosphere
  12. 23. Incoming solar radiation
  13. 24. Cause of Earth’s seasons
  14. 25. Layer where temperatures increase greatly
  15. 27. Beginning of fall
  16. 28. Occurs in the troposphere
  17. 29. Process that breaks rocks into sediment
  18. 30. Determines solar energy received
  19. 31. Northern lights phenomenon
  20. 33. Force of air pushing on surfaces
  21. 36. Layer containing the ozone layer
  22. 40. Part of atmosphere that creates auroras
  23. 43. Lowest layer of Earth’s atmosphere
  24. 44. Mixture of gases surrounding Earth
  25. 46. Water vapor’s role in heating the atmosphere
  26. 47. Angle at which sunlight hits Earth
  27. 48. Tiny solid or liquid particles in air
Down
  1. 1. Type of radiation absorbed by ozone
  2. 2. Energy process in the Sun’s core
  3. 5. Delay in heating and cooling
  4. 7. Minor gases found in the atmosphere
  5. 9. Boundary above the mesosphere
  6. 10. Water changing from liquid to gas
  7. 11. Gas that makes up about 80% of the atmosphere
  8. 12. Beginning of spring
  9. 13. Force that holds air molecules near Earth
  10. 19. Outermost atmospheric layer
  11. 20. Main source of Earth’s energy
  12. 21. Season with highest sun angle
  13. 24. Water released from plants
  14. 26. Receive the least direct sunlight
  15. 32. Type of energy radiated by Earth
  16. 34. Receives the most direct sunlight
  17. 35. Instrument used to measure air pressure
  18. 37. Gas that absorbs UV radiation
  19. 38. Season with lowest sun angle
  20. 39. Water vapor source from living organisms
  21. 41. Light gas in the exosphere
  22. 42. Energy bouncing back into space
  23. 45. Boundary above the troposphere