Earth Science Crossword (use ScienceSaurus)

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Across
  1. 3. A naturally formed solid substance with a crystal structure, which was not formed from living things. (sec 179)
  2. 6. melted rock (sec 177)
  3. 10. type of boundary where plates move away from each other (sec 184)
  4. 11. The number of major time zones on Earth (sec 169, “Did You Know?”)
  5. 12. Ring-shaped belt of volcano and earthquake activity in the Pacific Ocean (sec 185)
  6. 15. the central line of latitude; divides the Earth into two hemispheres (sec 169)
  7. 19. The international date line runs through the ______ ocean. (sec 169)
  8. 22. distance of a place north or south of the equator (sec 169)
  9. 24. people who make maps (sec 167)
  10. 26. Earth’s outermost layer (sec 175)
  11. 27. rocky outer shell of Earth, made up of crust and the rigid upper part of the mantle (sec 183)
  12. 29. Theory that Earth’s continents were once joined in a large single landmass (sec 182)
  13. 33. distance of a place east or west of the prime meridian measured in degrees (sec 169)
  14. 35. central line of longitude and represents 0 degrees longitude (sec 169)
  15. 36. “If Earth were the size of an apple, the crust would be only as thick as the apple’s _____” (sec 177, “Did You Know?”)
  16. 37. the place in Earth’s crust where the pressure was released (sec 186)
Down
  1. 1. term for the strength of an earthquake (sec 186)
  2. 2. type of wave that stretch and compress land; also called P-waves (sec 186)
  3. 4. type of plate boundary where plates collide (sec 184)
  4. 5. root word meaning ball shape (sec 183, “Word Watch”)
  5. 7. undersea mountain ranges that form at divergent boundaries (sec 184)
  6. 8. ______ current is the movement of materials (such as magma) due to heating and cooling (sec 183)
  7. 9. large cracks in Earth’s crust (sec 186)
  8. 13. the spot on the Earth’s surface directl above the focus (sec 186)
  9. 14. Today’s updated version of Continental Drift that includes evidence of plate movement (sec 182)
  10. 16. the scale on which earthquake magnitudes are measured; named for the American scientist Charles F. Richter, who invented the scale in 1935 (sec 186)
  11. 17. Scientist who proposed two ideas that are now known as the theory of continental drift (sec 182)
  12. 18. violent shaking of Earth’s crust (sec 186)
  13. 20. What is 23.5o for Earth? (sec 178, Earth Profile table)
  14. 21. type of waves that move land side to side; also called S-waves (sec 186)
  15. 23. lines of latitude (sec 169)
  16. 25. the element that takes up 45% of Earth’s crust (sec 175)
  17. 28. the highest magnitude on the Richter Scale (sec 186)
  18. 30. type of boundary where two plates slide past each other (sec 184)
  19. 31. Comes from the greek lithos meaning stone or rock (sec 183, “Word Watch”)
  20. 32. type of waves caused by earthquakes (sec 186)
  21. 34. type of wave that form when P and S waves combine; causes land to move up and down like ripples travelling through a pond (sec 186)