Rocks and Minerals

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Across
  1. 1. A solid substance that occurs naturally in rocks or in the ground
  2. 3. A type of rock that forms when layers of sediment are pressed together
  3. 6. A type of rock that forms when heat or pressure changes an existing rock
  4. 8. A layer in the soil
  5. 10. The solid rock that forms Earth’s surface
  6. 12. The remains of decayed plants or animals in the soil
  7. 13. The smallest particles that make up soil
Down
  1. 2. Molten (melted) rock that reaches Earth’s surface
  2. 4. Molten (melted) rock beneath Earth’s surface
  3. 5. The breaking down of rocks on Earth’s surface into smaller pieces
  4. 7. A type of rock that forms from melted rock that cools and hardens
  5. 9. The sequence of processes that change rocks from one type to another over long periods
  6. 11. The process of moving sediment from one place to another