Plate Tectonics Nail

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Across
  1. 2. Rock layers are usually arched downward
  2. 3. An example of a hot spot
  3. 5. Rock layers are usually arched upward
  4. 6. What happens when a fault slips
  5. 7. When all 7 continets came together
  6. 8. The man who proposed seafloor spreading
  7. 9. The amount of force per unit area
Down
  1. 1. The earth is 4.6...... years old
  2. 4. The man proposed the theory of Plate Tectonics