SCIENCE

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Across
  1. 6. a mixture of gases that surrounds and protects the Earth
  2. 9. the second layer of the atmosphere
  3. 10. changes in temperature caused by burning fossil fuels
  4. 11. when harmful and unsafe materials get spread into the enviornment
  5. 12. The planet that we live on
  6. 14. the layer in the atomosphere that is closest to earth
  7. 15. the fifth and farthest layer in the atomosphere
Down
  1. 1. the second last layer of the atmosphere
  2. 2. a heat transfer where hot air rises and cold air falls (hotair balloon)
  3. 3. the heat inside of the earth
  4. 4. a high tempurature
  5. 5. a heat transfer that does not need matter
  6. 7. direct touch
  7. 8. the 3rd layer in the atomosphere
  8. 10. a heat transfer that happens when heat moves from one object to another object
  9. 13. a layer of the atmosphere that starts with o