Earth and Space

2. Naturally occurring, inorganic solid having a definite crystalline structure and unique chemical composition
4. Rock formed from hot, fluid magma or lava
7. The amount of matter in a given volume
8. When a mineral breaks along rough or jagged surfaces
9. The ability of a mineral to resist being scratched
11. Rock containing rounded pebbles that is held together by clay or mud
15. Elements that are shiny, conduct heat and electricity, can be stretched into wires and bent into different shapes
18. The continuous changing of rocks from one form to another over long periods of time
19. Igneous Rock formed from lava on the outside of the Earth
20. Repeating pattern of a mineral having flat sides that meet in sharp edges and corners

1. The way a mineral reflects light from its surface
3. Igneous Rocks formed from magma within the Earth
5. Rocks formed when chemical changes heat or pressure change a rock, "changed rocks"
6. The color of the powder scraped off of a mineral when rubbed against a rough hard surface
10. Rocks formed when particles of rocks (sediments) are carried and deposited by wind and water
12. Minerals or combinations of minerals from which metals and nonmetals are extracted
13. Minerals that are rare, hard, beautiful, and durable that are often cut for jewelry
14. Hard substances compose of two or more minerals
16. Small particles of rock
17. When a mineral splits into smooth definite surfaces