Plate tectonics

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Across
  1. 4. A valley formed at a divergent boundary where land splits apart.
  2. 5. When one plate sinks under another plate into the mantle.
  3. 7. Large pieces of Earth's crust that move on the mantle.
  4. 9. A place where two plates move toward each other.
  5. 10. The theory the continents slowly move across Earth's surface.
Down
  1. 1. A place where two plates slide past each other.
  2. 2. A crack in Earth's crust where movement occurs.
  3. 3. An underwater mountain range where new crust forms at a divergent boundary.
  4. 6. A place where two plates move apart.
  5. 8. Hot molten rock inside Earth.