Across
- 3. a liquid metal layer
- 4. how much material is in one thing
- 7. the bottom part of the earth's crust
- 8. plates that make up earth's crust
- 10. a wall of metal that's really hot
- 11. the middle part of the earth
Down
- 1. dividing
- 2. colliding
- 5. the top part of the earth's crust
- 6. the top part of the earth
- 9. sliding