Layers of the Atmosphere

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Across
  1. 4. The planet that we live on
  2. 6. The most abundant gas in the atmosphere
  3. 11. The layer of gases surrounding Earth
  4. 12. Where the Northern Lights occur
  5. 13. The number of layers of the atmosphere
  6. 14. Where satellites roam
  7. 15. A form of oxygen, blocks harmful radiation
Down
  1. 1. The layer where weather occurs
  2. 2. The layer that contains the ozone
  3. 3. This layer prevents meteors from hitting Earth
  4. 5. The hottest layer
  5. 7. As altitude ___. air pressure increases
  6. 8. 21% of the atmosphere
  7. 9. As altitude ___, air pressure decreases
  8. 10. Gases that make up 1% of Earth's atmosphere