plate tectonics
Across
- 5. a depression in the ocean floor
- 6. the center of the earth
- 8. the crust that forms the continents
- 9. the crust that forms the ocean floor
- 10. the layer beneath earth's crust
- 11. the shaking wave-like movement of the ground in an earthquake
Down
- 1. the process of new crust forming at the oceans ridges and spreading outwards
- 2. a zone where earth's crust and mantle are being pulled apart
- 3. when one plate sinks below another plate during a collision
- 4. the process of new crust forming at the ocean ridges and spreading outwards
- 6. the separation of continents by drifting across earths surface
- 7. molten rock that has erupted onto the earth's surface
- 8. earth's outermost solid layer