Term 3 Revision

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Across
  1. 2. Rock changed by heat and pressure
  2. 4. Harmful substances in the air, water, or land
  3. 7. Looking for places with useful minerals or rocks
  4. 8. Pull together
  5. 9. Gluing sediments together by minerals
  6. 13. Flow of electrons in a circuit
  7. 15. Rock made from layers of sediment pressed together
  8. 18. Movement of broken rock from one place to another
  9. 19. Push away
  10. 20. Separating useful materials from the rock
  11. 21. Natural home of a plant or animal
  12. 22. Pressing sediments together to form solid rock
Down
  1. 1. Breaking down of rocks into smaller pieces by wind, water, or ice
  2. 3. Tool used to measure voltage
  3. 5. Device that provides DC electricity for a circuit
  4. 6. Circuit with more than one path for current
  5. 8. Current where electrons change direction
  6. 10. Rock formed when molten magma or lava cools and hardens
  7. 11. Preserved remains or evidence of ancient plants or animals
  8. 12. Current where electrons move one way
  9. 14. Removing rocks or minerals from the ground
  10. 16. Restoring land after mining
  11. 17. Circuit with one single loop for the current