Across
- 4. waves of energy
- 5. a solid ball of metal
- 6. second largest layer
- 9. solid outer section of the earth which includes the crust
Down
- 1. solid part of the upper mantel
- 2. a thin layer of crust that overlies the ocean basins
- 3. layer of rock which forms a continent
- 7. longest layer of the earth
- 8. the outer layer of the earth