Science Test #7 Review

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Across
  1. 8. the Hemisphere where the aurora borealis is seen
  2. 9. the air in the two upper layers of the atmosphere is said to be this because there are very few air molecules
  3. 11. the only planet suitable for life
  4. 12. the planet that appears royal blue and has a moon named Triton
  5. 14. darker areas on the outer surface of the sun
  6. 16. this eclipse happens when the moon is on the same level as the sun, it blocks out the sun's light
  7. 18. the closest planet to the sun
  8. 19. the light of the moon comes from this
  9. 21. a phenomenon that occurs in the lower regions of the thermosphere
  10. 24. the atmosphere of the sun
  11. 25. the largest planet in the solar system, the planet with the Great Red Spot
  12. 28. the planet surrounded by seven bands of rings and at least sixty moons
  13. 29. seventy-eight percent of the air is this gas
Down
  1. 1. the layer of atmosphere closest to the earth, the layer where all weather occurs
  2. 2. the air pressure at sea level, how many pounds per square inch
  3. 3. the brightest planet in the sky, Earth's "twin planet"
  4. 4. the innermost section of the sun
  5. 5. the surface layer of the sun which is visible to our eyes
  6. 6. the "red planet"
  7. 7. the vapor blanket surrounding the sun which is visible only during a total eclipse
  8. 10. the layer of the atmosphere that helps protect the earth from being bombarded with meteoroids
  9. 13. the planet discovered by Sir WIlliam Herschel, the planet that is tipped over on its side
  10. 15. the layer in the stratosphere that helps protect the earth from ultraviolet rays
  11. 17. a light display seen near the poles caused by the collisions of particles from the solar wind with molecules of air
  12. 20. how many millions of miles between the sun and the earth
  13. 22. this eclipse happens when the moon travels through the earth's shadow
  14. 23. the upmost layer of the atmosphere
  15. 26. when the moon is gibbous it is this
  16. 27. the entire earth is surrounded by this field that protects the earth from harmful space particles