Plate Tectonics

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Across
  1. 4. Plates come together, or converge
  2. 5. When magma reaches the surface
  3. 6. The stress force that pulls on the crust and thins rock in the middle and pulls two plates apart.
  4. 10. A plate boundary where two plates move past each other in opposite directions
  5. 11. these form along the boundaries of Earth's plates
  6. 12. The stress force that squeezes rock like a giant trash compactor until it folds or breaks.
  7. 14. A plate boundary where two plates move apart or away from each other.
  8. 15. The name that Alfred Wagener gave the super continent that broke apart 200 million years ago and gave rise to today's continents
  9. 16. A German scientist who proposed the theory of continental drift.
  10. 17. A string of volcanoes that form as the result of subduction of one oceanic plate beneath a second oceanic plate.
  11. 18. An area where material from deep within Earth's mantle rises through the crust and melts to form magma, eventually leading to the formation of a volcano.
Down
  1. 1. A mountain that forms in the Earth's crust when molten material, or magma, reaches the surface.
  2. 2. A theory stating that the Earth's plates are in slow, constant motion, driven by convection currents in the mantle.
  3. 3. The movement of rock within the mantle where hot rock rises and cooler rock sinks
  4. 7. A molten mixture of rock-forming substances, gases, and water from the mantle.
  5. 8. One major belt of volcanos along the coasts of North and South America and those in Japan and the Philippines.
  6. 9. The idea, created by Alfred Wegener, that the continents slowly moved across the Earth's surface
  7. 13. The fault cuts through the rock at an angle, so that one block of rock sits over the fault, while the other block lies under the fault