8th Grade Science Fusion Review Crossword (Unit 3 & Unit 4)

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Across
  1. 1. Theory that Earth is divided into giant moving slabs (3)
  2. 5. Fault that occurs at a transform boundary (3)
  3. 6. Boundary where plates pull apart (3)
  4. 7. Stress that pulls material apart (3)
  5. 8. Earth's layer that is lquid (3)
  6. 10. Fault that occurs at a convergent boundary (3)
  7. 14. Earth's layer that is the most dense (3)
  8. 16. Outermost layer of Earth (3)
  9. 17. Directly above the focus on Earth's surface (3)
  10. 18. Soft sticky tree sap that can trap insect fossils (4)
  11. 20. Boundary where plates slide past each other (3)
  12. 22. Type of dating used to determine whether an object is older or younger (4)
  13. 23. Long cylinder of ice (4)
  14. 24. Place within Earth along a fault which the first motion of an earthquake occurs (3)
  15. 25. Process by which new seafloor forms (3)
  16. 27. Fault that occurs at a divergent boundary (3)
  17. 28. Stress that causes material to twist (3)
  18. 29. Remains of an organism that lived long ago (4)
  19. 31. Describes the weather conditions in an area over a long period of time (4)
  20. 32. Theory that today's continents were once one large landmass (3)
  21. 34. Break in Earth's crust along which blocks move (3)
  22. 40. Geologic processes that happened in the past can explain current geologic processes (4)
Down
  1. 2. States that younger rocks are on top and older rocks are on the bottom (4)
  2. 3. The age of the Earth is 4.6 ______ years old (3)
  3. 4. Clues about Earth's interior come from these space objects (3)
  4. 9. Type of fossil that formed in sedimentary rock by animal activity (4)
  5. 11. Sudden ground movement when rocks move suddenly and release energy (3)
  6. 12. The "Ring of Fire" is a line of _____ around the Pacific Ocean (3)
  7. 13. Scientist who proposed the theory of continental drift (3)
  8. 15. Stress that squeezes or pushes material together (3)
  9. 19. Name of one large landmass "supercontinent" (3)
  10. 21. Type of seismic wave that doesn't go through liquids (3)
  11. 26. Type of dating used to determine the exact age of a rock or object (4)
  12. 30. Thickest layer of the Earth (3)
  13. 33. Wave generated from an underwater earthquake (3)
  14. 35. Type of seismic wave that is the fastest (3)
  15. 36. Happens at a convergent boundary when one plates slides under another (3)
  16. 37. Layer of earth that contains the crust and upper part of the mantle (3)
  17. 38. Boundary where plates push together (3)
  18. 39. Fossil that only lived for a short period of time that helps date rocks (4)