Across
- 4. the layer of earth we live on
- 5. type of rocks that form in layers
- 7. pure substances found in nature
- 8. the layer of rock that around the earth
- 9. a cycle of heating and rising, cooling and sinking
- 10. breaking down of rocks
- 11. type of rock formed from volcanoes
- 12. plates slide past one another
- 16. mass divided by volume
- 18. type of rock formed by heat and pressure
- 20. plates coming together
Down
- 1. sections of the earth's crust
- 2. acid rain dissolving limestone is ___ weathering
- 3. the removal of sediments
- 6. shininess
- 7. ice wedging is a type of _____ weathering
- 13. the color of power left behind
- 14. the largest layer of earth
- 15. one plate goes underneath the other
- 17. pieces of rocks, sand, and shells
- 19. plates moving apart