Across
- 4. Naturally occurring, inorganic solid having a definite crystalline structure and unique chemical composition
- 7. Rocks formed when chemical changes heat or pressure change a rock, "changed rocks"
- 8. When a mineral breaks along rough or jagged surfaces
- 12. The color of the powder scraped off of a mineral when rubbed against a rough hard surface
- 13. Rocks formed when particles of rocks (sediments) are carried and deposited by wind and water
- 14. Small particles of rock
- 15. Igneous Rocks formed from magma within the Earth
- 17. The continuous changing of rocks from one form to another over long periods of time
- 18. Minerals that are rare, hard, beautiful, and durable that are often cut for jewelry
- 20. Hard substances compose of two or more minerals
Down
- 1. Minerals or combinations of minerals from which metals and nonmetals are extracted
- 2. When a mineral splits into smooth definite surfaces
- 3. The way a mineral reflects light from its surface
- 5. The amount of matter in a given volume
- 6. Rock containing rounded pebbles that is held together by clay or mud
- 9. The ability of a mineral to resist being scratched
- 10. Repeating pattern of a mineral having flat sides that meet in sharp edges and corners
- 11. Igneous Rock formed from lava on the outside of the Earth
- 16. Rock formed from hot, fluid magma or lava
- 19. Elements that are shiny, conduct heat and electricity, can be stretched into wires and bent into different shapes