Earth's Structure and Tectonic Plates

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Across
  1. 4. this piece of evidence explains why palm tree fossils have been found in very cold regions of the Earth
  2. 6. the thick middle layer in the solid part of Earth
  3. 8. this theory states that tectonic plates are constantly moving
  4. 10. scrapes across rocks where a glacier once was
  5. 11. outermost layer
  6. 13. Earth's entire solid body
  7. 15. the scientists who is generally credit with the continental drift theory
  8. 17. the rigid layer of Earth that includes the crust and the uppermost mantle
  9. 18. rock formations, rivers, and lakes appear to match up on different continents due to this piece of evidence
  10. 19. a ball-like shape
Down
  1. 1. evidence of dead plants and animals
  2. 2. the force that every object exerts on every other object because of their masses
  3. 3. the outer part of Earth's magnetic field
  4. 4. currents are found in the mantle and cause the tectonic plates to move
  5. 5. the earth is made up of___________ which are constantly moving along above the mantle
  6. 7. a plastic, or flowing, layer within Earth's mantle
  7. 9. solid form
  8. 12. the amount of mass per unit of volume
  9. 14. liquid form and moves
  10. 16. "super-continent"