Unit 1 Lesson 3

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Across
  1. 2. natural creation/geologic feature of the Earth
  2. 3. large slabs of lithosphere that move
  3. 8. satellites and receivers used to determine location on Earth
  4. 9. edge of continent that is underwater
  5. 10. sudden shaking due to seismic activity of a fault
  6. 11. process through which new ocean floor is made
  7. 13. how heat flows; warm rises and cool sinks
  8. 14. continuous underwater mountain range
  9. 16. valley created when tectonic plates drift apart
  10. 17. steep-sided depression on ocean floor
  11. 19. the pull toward the center of the Earth
  12. 20. mountain or hill that can vent lava and hot vapor
  13. 21. divergent; makes sea-floor spreading
Down
  1. 1. tranform or transverse; cause earthquakes
  2. 4. convergent; creates mountains
  3. 5. supercontinent that existed approximately 250mya
  4. 6. large continuous landmass
  5. 7. remains of plants and animals from long ago
  6. 12. theory that Earth's outer layer is made of moving plates
  7. 15. forms when a rift valley fills with water
  8. 18. molten rock under Earth's surface