Chapter 7 Vocab

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Across
  1. 8. The plates Earth is formed of
  2. 10. When a magnetic field reverses dicretion
  3. 12. when magnetized objects point north
  4. 14. Mountain ranges in the ocean
  5. 15. When magnetized objects point south instead of north
  6. 16. when two tectonic plates separate
Down
  1. 1. the constant motion of continents on Earth
  2. 2. When two tectonic plates slide past each other
  3. 3. When a denser plate sinks below a more buoyant
  4. 4. When two plates collide
  5. 5. circulation of materials caused by temperature and density
  6. 6. The cold, ridged, outer layer of Earth
  7. 7. when plates move away from a ridge
  8. 9. When a slab sinks and pulls the rest of the plate
  9. 11. When new crust forms along a mid oceanic-range and pushes away older crust
  10. 13. all the continents were once apart of a supercontient