Across
- 3. the thin layer of the earth
- 5. the thing that powers convection currents
- 6. when the crust comes together
- 7. 75% of the earth
- 8. when the earth's crust rubs together
Down
- 1. when the earth's crust spreads apart
- 2. the supercontinent
- 4. (this is actually 2 words no spaces)the _ _ _ _ _ _ that move around to form different landforms