Across
- 5. This rock is created with heat and pressure
- 7. When water freezes in the cracks of a rock
- 12. A substance made up of two or more minerals
- 13. The boundary between two plates that drift further apart
- 15. Tool used to measure earthquakes
- 16. The boundary between two tectonic plates colliding head on
- 17. Where convection currents are created
- 21. These are solid inorganic substances
- 22. Scale of hardness
- 24. Rock that is created below the surface
- 25. Another word for characteristics
Down
- 1. When a mineral breaks into long flat strips
- 2. The hardest mineral
- 3. When a mineral breaks into a random jagged shape
- 4. The type of weathering when a rabbit burrows a hole in a rock
- 6. The supercontinent
- 8. The thinnest layer of the earth
- 9. The only liquid layer of the earth
- 10. Rock breaking down due to oxygen exposure
- 11. The test to determine the powder colour of a mineral
- 14. Hardened lava
- 18. When a rock is broken down into sediment
- 19. Scale to measure the magnitude of an earthquake
- 20. The boundary when two plates slide past each other
- 23. The hottest layer of the earth