Earth's Interior Review

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Across
  1. 2. lava flow with a smooth, ropy surface
  2. 6. plate boundaries collide
  3. 10. undersea mountain chains
  4. 11. series of waves caused by earthquakes or volanoes
  5. 12. or stratovolcanoes, large volcanoes with material in layers
  6. 15. theory proposed by Alfred Wegener, continents are moving
  7. 17. lava slow with a rough, rubbly surface
  8. 19. solid part of mantle, below asthenosphere
  9. 21. rising and falling of heat through the mantle
  10. 22. plate boundaries slide past each other; where most earthquakes occur
  11. 23. dense, fast-moving flow of solidified lava, ash, and gas
  12. 25. force that acts on a rock to change its shape or volume
  13. 26. a hot spring that erupts a column of water
Down
  1. 1. point on Earth's surface directly above the focus
  2. 3. center of Earth
  3. 4. plate boundaries divide
  4. 5. weak spot in Earth's surface where magma comes to the surface
  5. 7. place where an earthquake begins under Earth's surface
  6. 8. volcano that forms when flows of lava form gently sloping, wide sides
  7. 9. theory proposed by Harry Hess, the sea floor is spreading
  8. 12. topmost layer of Earth, "skin"
  9. 13. edge of the Pacific plate where many earthquakes and volcanoes occur
  10. 14. low, steep volcano made of cinders
  11. 16. rigid, means "stone", uppermost layer of the mantle
  12. 17. weak or soft, below lithosphere
  13. 18. when the ocean floor sinks below a continental plate
  14. 20. break in the Earth's crust
  15. 24. when a volcano collapses on itself