plate tec

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Across
  1. 2. An area where oceanic crust and continental crust are colliding. The denser oceanic crust is subducted under the continental crust resulting in mountains and volcanoes.
  2. 4. The boundary that occurs where two plates slide past each other.
  3. 11. melted rock on Earth’s surface.
  4. 12. The theory that explains the global distribution of geological phenomena such as seismicity, volcanism, continental drift, and mountain building in terms of the formation, destruction, movement, and interaction of the earth's lithospheric plates
  5. 15. a slowly flowing layer of solid and melted rock formed by heat and pressure; the lithosphere floats on the asthenosphere.
  6. 16. A huge ocean wave caused by a sudden, powerful shift on the ocean floor, like an undersea earthquake, landslide, or volcanic eruption.
  7. 17. A Broad, domed volcano with gently sloping sides.
  8. 19. an area where two or more tectonic plates meet.
  9. 20. melted rock beneath Earth’s surface.
Down
  1. 1. The process that forms new ocean floor and oceanic crust. Magma oozes up from the mantle through a crack in the ocean floor, filling in the space between the plates and spreading out from the plate boundary.
  2. 3. Boundary occurring where two plates move apart, a, or molten rock, to rise from the Earth's interior to fill in the gap. The two plates move away from each other like two conveyor belts moving in opposite directions.
  3. 5. The highest surface part of a wave
  4. 6. A logarithmic scale, ranging from 1 to 10, for indicating the intensity of an earthquake
  5. 7. The lowest surface part of a wave
  6. 8. The name given to the supercontinent that existed more than 225 million years ago, in which the present‐day continents were joined together in one large landmass.
  7. 9. A crack or fracture in Earth's crust where two tectonic plates grind past each other in a horizontal direction.
  8. 10. is formed when very hot rock rises from the mantle and erupts through Earth’s crust.
  9. 13. the outermost layer of Earth.
  10. 14. The point on earth’s surface that is vertically above the focus of an earthquake. Focus ‐ The point of origin of an earthquake
  11. 18. This dense layer of the earth is made of hot, semisolid rock and is located directly below the crust. It is about 1,800 miles (2,900 km) thick.