Earth's Structures

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Across
  1. 1. Opening through which magma escapes
  2. 3. Force that pushes rock masses in opposite directions
  3. 7. Rock from magma below the surface
  4. 9. Underground point where energy is released in earthquake
  5. 12. Rock of the ocean floor
  6. 14. Crust and rigid part of mantle, broken into tectonic plates
  7. 15. Solid that occurs naturally and has a definite chemical composition
  8. 17. Region where one plate slides under another plate
  9. 20. Lines on a topographic map that show elevation
  10. 21. Soft layer in mantle that flows like liquid
  11. 23. Forms from layers of sediment that have cemented together
  12. 25. Earth's innermost layer
Down
  1. 2. Point on Earth's surface directly above the focus
  2. 4. Forms when molten rock cools and hardens
  3. 5. Boundary where two plates collide
  4. 6. Slowest seismic wave, causes the most damage
  5. 8. Mineral that contains useful substances
  6. 10. Older and thicker part of crust, makes up continents
  7. 11. Forms from intense heat and pressure
  8. 13. Boundary where plates slide past each other
  9. 16. S waves, second fastest seismic wave, does not travel through liquid
  10. 18. Boundary where two plates pull apart
  11. 19. Rock from lava above the surface
  12. 22. P waves, fastest seismic wave
  13. 24. Force that pulls rock apart