*Unit 3 Review*

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Across
  1. 1. What type of valley can form at divergent boundaries?
  2. 6. What type of resource can be replaced naturally?
  3. 7. What scale is used to measure the hardness of minerals?
  4. 8. What type of rock forms from sediments?
  5. 10. What type of rock forms from cooled magma?
  6. 13. What is the rigid layer made of the upper mantle and crust?
  7. 15. What type of energy source comes from living or recently living organisms?
  8. 16. What term describes how a mineral breaks along its planes of weakness?
  9. 20. What type of waves help us study Earth's layers?
  10. 22. What was the name of the supercontinent proposed by Wegener?
  11. 24. What type of rock changes form due to heat and pressure?
  12. 26. What process involves the removal and transport of sediment?
  13. 27. What term describes when a mineral breaks with rough edges?
  14. 28. What term describes the color of a mineral when powdered?
  15. 30. What is the semi-rigid part of the middle mantle?
  16. 32. What process turns sediments into solid rock?
  17. 34. What type of energy is generated by moving air?
  18. 35. What are the large sections of Earth's crust called?
  19. 36. What process breaks rocks into smaller pieces?
  20. 37. What geological feature can occur at convergent boundaries?
  21. 38. What term describes how a mineral reflects light?
  22. 39. What is a solid fossil fuel formed from ancient plants?
Down
  1. 2. What type of fuel is formed from the remains of living organisms?
  2. 3. Who proposed the theory of Continental Drift?
  3. 4. What type of plates cause earthquakes and volcanic eruptions?
  4. 5. What type of energy comes from the heat within the Earth?
  5. 9. What process caused heavier elements to sink to the center of the Earth?
  6. 11. What term describes how a mineral feels to the touch?
  7. 12. What type of energy comes from the sun?
  8. 14. What type of resource cannot be replaced easily?
  9. 17. What type of energy is released from the nucleus of atoms?
  10. 18. What type of energy is generated from flowing water?
  11. 19. What is the primary composition of oceanic crust?
  12. 21. What type of currents cause the movement of the mantle?
  13. 23. What is the primary composition of continental crust?
  14. 25. What is the name of the area known for frequent earthquakes and volcanoes?
  15. 29. What type of gas is used for heating and cooking?
  16. 31. What is a liquid fossil fuel derived from ancient organisms?
  17. 33. What is a break in the Earth's crust called?