Plate Tectonics and Erosion

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Across
  1. 1. The theory that states that Earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other
  2. 3. Molten rock beneath the earth's surface
  3. 8. volcano with a tall, cone-shaped mountains in which layers of lava alternate with layers of ash by quiet and explosive eruptions
  4. 10. no longer in existence
  5. 12. The theory that suggests that continents are in constant motion and have moved to their current location from a single landmass
  6. 14. A glacier that covers much of a continent or large island
  7. 16. the outermost layer of Earth
  8. 19. volcano with a wide, gently sloping mountain made of layers of lava and formed by quiet eruptions
  9. 20. a destructive mud flow on the slopes of a volcano.
  10. 21. core the inner most layer of Earth that is a solid sphere
  11. 22. German scientist who proposed that all the continents were once part of a supercontinent
  12. 26. The boundary where plates move away from each other
  13. 27. The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
  14. 28. A small, steeply sloped volcano that forms from moderately explosive eruptions of pyroclastic material.
  15. 29. core the layer that is made of liquid iron & nickel
  16. 31. The boundary where plates slide past one another
Down
  1. 2. The process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.
  2. 4. Underwater mountains created by a divergent boundary
  3. 5. volcanoes forming from a thin spot in the crust where magma builds up and bursts through
  4. 6. flow from high to low elevation in mountain settings
  5. 7. flow a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and flowing at great speed.
  6. 9. The boundary between two plates moving together
  7. 11. An idea that is not proven but much evidence supports the idea
  8. 13. liquid magma that reaches the surface
  9. 15. A major geological fault in California. Sliding Boundary
  10. 17. The process by which wind, water, ice, or gravity transports soil and sediment from one location to another
  11. 18. A vent or fissure in the Earth's surface through which magma and gases are expelled
  12. 23. the region where two tectonic plates are in contact
  13. 24. the thicket layer of Earth that is located under the crust
  14. 25. inactive, sleeping volcano
  15. 30. The supercontinent that existed 250 million years ago when all the landmasses were together