Chapter 7 Vocabulary Henry White

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Across
  1. 2. All continents are in constant motion on the surface of the Earth.
  2. 7. A state which magnetized objects, such as compass needles, will orient themselves to point north.
  3. 8. The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
  4. 11. From where two plates collide.
  5. 13. A state in which magnetized objects would reverse direction and orient themselves to point south.
  6. 15. The circulation of material caused by differences in temperature and density.
Down
  1. 1. Occurs when the magnetic field reverses direction.
  2. 3. Rising mantle material at mid-ocean ridges creates the potential for plates to move away from the fridge with a force
  3. 4. The mountain ranges in the middle of the oceans.
  4. 5. Forms where two plates separate.
  5. 6. As a slab sinks, it pulls on the rest of the plate with a force.
  6. 9. Belief that all continents were once part of one supercontinent.
  7. 10. States that Earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other.
  8. 12. the denser plate sinks below the more buoyant plate.
  9. 14. The cold and rigid outermost rock layer.