Across
- 2. The thin outer layer of the Earth
- 5. Plates slide past each other - causes earthquakes
- 7. The center of the Earth. It's very hot and made of iron.
- 8. The layer of thick magma that the plates float on
- 9. The force that pulls everything toward the center of the Earth.
Down
- 1. Plates move away from each other - causes seafloor spreading
- 3. Is ocean crust thinner or thicker than continental crust?
- 4. Plates move toward each other - causes subduction
- 6. The longest mountain chain in the world