chapter 10

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Across
  1. 3. lithosphere forms as magma rises to Earth's surface and solidifies
  2. 5. Study of the magnetic properties of rock
  3. 8. where two plates slide past eachother horizontally
  4. 10. a small,extinct land reptile
  5. 12. another word for sinks
  6. 15. Alfred Wegeners proposed hypothesis
  7. 16. tectonic plates that are moving away from eachother
  8. 17. landmass composed of all earths continents
  9. 19. layer of plastic rock just below the lithospher
Down
  1. 1. undersea mountain ranges that run steep valleys
  2. 2. forms where two plates collide
  3. 4. theory that explains why and how continents move
  4. 6. segments of a mid ocean ridge are connected by transform boundaries
  5. 7. process by which a continent breaks apart
  6. 9. molten rock
  7. 11. narrow valley that forms where the plates seperate
  8. 13. where one plate moves on to another plate
  9. 14. ridged upper part of the mantle form a layer of earth
  10. 15. movement of heated material due to differences in density
  11. 18. the force exerted by the sinking plate