Across
- 2. less dense rocks that are lighter in color and rich in silicon and aluminum
- 4. this determines the properties of a mineral
- 5. extrusive rocks formed on the earth’s surface
- 7. sedimentary rock formed from fragments of sand, silt, or clay
- 9. rocks formed from fragments of soil and other rocks
- 11. when minerals break with jagged edges
- 12. rocks that have a smooth surface with little to no crystals
- 13. when minerals break along clean lines
- 16. how tightly packed particles are in a rock
- 17. rocks formed through heat and pressure deep within the earth
- 18. rocks that contain pockets of gas bubbles
- 19. the color of powder when a mineral is scratched on a ceramic tile
- 20. rocks formed by cooling magma or lava through solidification
Down
- 1. intrusive rocks formed deep in the earth
- 3. sedimentary rock formed from the remains of living things
- 6. metallic or nonmetallic, the way light reflects off a mineral
- 7. rocks that have a very rough texture
- 8. dense rocks that are darker in color and rich in iron
- 10. sedimentary rock formed from the evaporation of mineral-filled water
- 14. the building blocks of rocks
- 15. metamorphic rocks that have a banding pattern like Gneiss