Ch. 3 Vocabulary Crossword

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Across
  1. 1. large sea waves.
  2. 5. the layer of Earth outside the core layers. It is made of mostly solid rock, but the top of this layer is partly melted.
  3. 6. the circular movement of a liquid or gas as it heats.
  4. 11. a mountain that builds around a vent where magma pushes up through Earth’s surface.
  5. 12. a single landmass from which the continents separated.
  6. 13. a shaking of Earth’s crust.
  7. 15. the top layer of Earth that is very thin.
  8. 16. an opening in a volcano that pushes magma up through Earth’s surface.
Down
  1. 2. the theory that the ocean floor spreads apart as new crust is formed at the mid-oceanic ridge.
  2. 3. the theory that Earth’s crust is made up of large sections, or plates, that move.
  3. 4. the theory that Earth’s major landmasses move.
  4. 7. a break in Earth’s crust along which movement occurs.
  5. 8. the bending of rock layers that are squeezed together.
  6. 9. the center of the Earth which is separated into the inner and outer cores. It is solid iron and nickel, surrounded by melted iron and nickel.
  7. 10. An instrument that detects and records earthquake waves.
  8. 14. a deep crack in the ocean floor.