Layers of the Atmosphere Homework

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Across
  1. 3. The force that keeps Earth’s atmosphere from floating away.
  2. 6. The mesosphere is the ______ layer of the atmosphere.
  3. 7. The coldest layer of the atmosphere where meteors burn up.
  4. 10. A special form of oxygen in the stratosphere that protects Earth from harmful ultraviolet rays.
  5. 12. The layer above the troposphere where the ozone layer is found.
  6. 13. The thermosphere is the ______ layer of the atmosphere.
  7. 14. To travel around a planet.
  8. 15. “Shooting stars” that burn up in the mesosphere.
  9. 16. An object that orbits Earth, often found in the exosphere.
Down
  1. 1. The force of air pushing down on Earth; it decreases as altitude increases.
  2. 2. The blanket of gases surrounding Earth.
  3. 4. Shimmering curtains of light seen near Earth’s poles.
  4. 5. The hottest layer of the atmosphere where auroras occur.
  5. 8. The outermost layer of the atmosphere that blends into outer space.
  6. 9. Height above Earth’s surface.
  7. 11. The lowest layer of the atmosphere where all weather happens.