Across
- 2. rarest rock
- 3. 1/3 of earth
- 4. branch of science
- 8. 3rdlayerof earth
- 10. formed underwater
- 12. magnesium is used for this
- 15. whats the last inner layerof the earth
- 17. rock from sand
Down
- 1. used for bench tops
- 3. whats another name for magma
- 5. renuable rock
- 6. hard igneous rock
- 7. what word comes from latin word ignis meaning fire
- 9. what rock is changed by the heat or pressure
- 11. what layer of earth is thickest
- 13. rock craftsman name
- 14. pencil is made of
- 16. what is the first outer layerof the earth