IAstronomy Lesson

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Across
  1. 2. The outermost layer of the Earth
  2. 5. sorting major components of a planet by its density
  3. 6. The liquid layer of the Earth that sits above the core
  4. 7. Tectonic plates slide aqainst eachother
  5. 8. The third layer of the atmosphere which is directly above the Stratosphere
  6. 9. The plate with the most oceanic crust will push under another
  7. 13. Heat energy escapes from Earths interior to cooler region
  8. 14. Giant pieces of the Earths crust and upper mantle that slowly shift
  9. 16. Proposed the continental drift theory
  10. 17. The solid, compressed layer of the earth made of mostly iron
Down
  1. 1. The second layer of the Earth
  2. 3. Atmospheric layer that goes up to 50 km
  3. 4. Tectonic plates move towards eachother
  4. 10. Layer that absorbs ultraviolet radiation from the sun
  5. 11. The layer of Earth that has a high electric charge
  6. 12. Tectonic plates move away from eachother
  7. 15. Lowest atmospheric layer