Across
- 8. Forms when lava erupts from a volcano
- 9. Forms from fossils or organisms that once lived in the ocean
- 11. Forms when hot liquid magma cools into solid rock
- 12. Combination of one or more minerals
- 14. Slow cooling magma
- 15. Rock salt
Down
- 1. Minerals and organic matter a rock contains
- 2. Long cracks in earth's crust
- 3. Rock that looks glassy
- 4. forms when sediments are buried compacted, and cemented together
- 5. Forms when solid rock melts below earths surface
- 6. Limestone that consists of the shells or marine mollusks
- 7. Size, shape, and position of grains
- 10. A result of increasing heat and pressure
- 13. Cools very quickly on earth's surface