Science crossword by the sky

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Across
  1. 2. A piece of rock from space that entered the earth's atmosphere
  2. 6. Half of the earth divided into Northern and Southern halves
  3. 9. A small piece of a meteor that survived the atmosphere
  4. 10. Several layers of gases surrounding the earth and protecting us from harmful sun radiation
  5. 12. All water on earth
  6. 14. Scientists that study rocks or geology
  7. 16. Gases in the atmosphere that produce heat and is having and increase ie. global warming
  8. 17. All rocks and minerals on Earth including soil on the crust
Down
  1. 1. The frozen water of Earth
  2. 3. A layer that that absorbs most of the Sun's ultraviolet radiation
  3. 4. All rocks and minerals on Earth including soil
  4. 5. An old culture which we use there old words for more words such as geo,bio,sphere
  5. 7. All forms of life on Earth
  6. 8. Weather like rain and wind breaking down rocks and other solids
  7. 11. A gas in the atmosphere that is absorbed by plants in photosynthesis.
  8. 13. Rock that has been weathered down to minerals,dirt,sand and etc,that is great for farming
  9. 15. Large pieces of rock floating in space