Unit 4: Rocks & Minerals

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Across
  1. 2. to fall out of solution
  2. 3. building blocks of rocks
  3. 10. a naturally occurring solid mixture of one or more minerals or organic matter
  4. 12. forms when particles from other rocks or the remains of plants and animals are compacted and cemented together
  5. 13. composed of fragments of older rock
  6. 14. least helpful property for identifying minerals
  7. 16. forms from the fast cooling of lava on Earth's surface. Results in small mineral grains
  8. 17. mineral grains that arranged randomly and do not split in layers
  9. 18. breakage along flat planes
  10. 19. rich in magnesium and iron and dark in color
  11. 20. the color of a mineral in powder form
Down
  1. 1. random and uneven breakage
  2. 4. a type of rock that forms from the cooling of molten rock at or below the surface of the earth
  3. 5. forms when magma cools slowly beneath Earth's surface. Results in large mineral grains
  4. 6. rich in silica and light in color
  5. 7. how a mineral reflects light
  6. 8. mineral grains are arranged in parallel layers or bands
  7. 9. made of precipitated minerals or plant & animal remains
  8. 11. resistance to being scratched
  9. 15. made from once living organisms