Across
- 3. magma when it has reached the earths surface
- 5. a metamorphic rock that is extremely compact and is composed mainly of Quartz
- 8. a rock that is formed by the cooling of magma or lava.
- 10. one of the three main rock types formed When extreme heat and pressure is placed upon the two other rock types
- 11. a coagulation of minerals
- 13. a sedimentary rock consisting of sand or Quartz grain cemented together
- 14. accumulation of sand and rocks dirt and broken fossils
- 15. the study of rocks
- 17. A type of metamorphic rock that starts with a
- 18. cycle the cycle that describes the formation, destruction and re-formation of rocks
Down
- 1. an intrusive igneous rock that is very hard and has many uses including construction
- 2. lava before it reaches the surface
- 4. One of the three main rock types formed by the compaction of sediments
- 6. one of the two types of igneous rock that is formed below the surface
- 7. an igneous rock that is formed above the earths surface
- 9. remains or impression of a prehistoric organism preserved in rock
- 12. one of the two main components necessary creating metamorphic rocks
- 15. a component necessary in creating metamorphic rocks
- 16. A mineral that has substantial use and value
- 19. A sedimentary rock used as fuel