Atmosphere and Intro to Plate Tectonics

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Across
  1. 4. All the continents were part of a supercontinent that existed about 300 million years ago
  2. 6. __________ drift: The theory that all the continents are in constant motion on the surface of Earth
  3. 7. The Earth system that contains all of Earth's water
  4. 8. ________ clues: Evidence of the same mountain ranges across different continents
  5. 11. _________ clues: Ancient plants and animal remains found on different continents that provide evidence for continental drift
  6. 12. The Earth system that is made up of the solid part of the Earth
  7. 13. The atmospheric layer directly above the troposphere
  8. 14. ________ clues: Evidence of much colder weather hundreds of million years ago across different continents
Down
  1. 1. All the living things on Earth make up this Earth system
  2. 2. The __________ layer is an area of the stratosphere with a high concentration of ozone
  3. 3. Alfred __________, the scientist who first proposed that the continents are drifting
  4. 5. The atmospheric layer closest to Earth's surface
  5. 9. a gas found in the atmosphere necessary for human life
  6. 10. A thin layer of gases surrounding Earth