Across
- 3. thick layer of rock between the crust and the core
- 5. a sedimentary rock
- 7. wear away or change the appearance or texture of (something) by long exposure to the air
- 8. a metamorphic rock
- 12. a liquid layer about 2260 km thick
- 13. become or cause to become less hot
- 15. rock that forms when existing rock is changed by heat, pressure or chemicals beaneath earth's surface
- 17. an igneous rock
- 18. rock that forms when melted rock from deep below earth's surface hardens
- 19. make or become liquefied by heat
- 20. a solid material made up of one or more minerals
Down
- 1. rock broken by natural forces
- 2. to become hard or harder
- 4. the earth's innermost part
- 6. rock that forms when rock, soil and once living things is cemented
- 9. the process that changes rock
- 10. a material) bind (particles) together in sedimentary rock.
- 11. rock heated to a tempature that is sufficient to turn into a thick liquid
- 14. the quality of being hot or high tempatured
- 16. the continuous physical force exerted on or against an object by something in contract with it