Science

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Across
  1. 1. it is rigid, rocky outer layer of the Earth, consisting of the crust and the solid outermost layer of the upper mantle.
  2. 3. a fracture along which the blocks of crust on either side have moved relative to one another parallel to the fracture.
  3. 5. Two plate move together
  4. 6. is the layer on which the lithosphere rest; where rocks deform by flowing due to heat and pressure
  5. 7. A boundary between the crust and mantle, as inferred from the change in the speed of body waves (point B)is called....
  6. 10. a series of waves caused by earthquakes or undersea volcanic eruptions.
  7. 12. a collision between two of Earth's tectonic plates, where one plate sinks into the mantle underneath the other plate.
  8. 13. extremely hot liquid and semi-liquid rock located under Earth's surface.
  9. 15. tend to stick together, even though they are constantly
  10. 16. shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.
  11. 19. a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for some distance.
  12. 20. made up of natural substances called minerals
  13. 21. The top layer, least dense layer, compose of the continental and oceanic crust.
  14. 22. Two plates slide past each other horizontally
  15. 25. inside layer, most dense.
  16. 28. are created as a result of erosion by rivers or by geological movement of tectonic plates.
  17. 30. underlies the oceans and is made mostly of heavy, dense basalt.
Down
  1. 2. the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
  2. 4. a vent or fissure in the planet's crust through which lava, ash, rock and gases erupt.
  3. 8. _____ plate is the third largest major plate.
  4. 9. a volcanic rock and and it forms the oceanic crust...
  5. 11. Two plates move apart from each other
  6. 14. materials tend to sink
  7. 17. _____ plate is the only major tectonic plate that is mainly underwater, it is also the largest.
  8. 18. is a mineral that's a major component of continental crust
  9. 23. Because the plates are _____,
  10. 24. a large landform that rises above the surrounding land in a limited area, usually in the form of a peak.
  11. 26. is a region deep within the Earth's mantle from which heat rises through the process of convection.
  12. 27. Middle layer, more dense than the crust.
  13. 29. Is lighter, older, and mostly made of granite.
  14. 31. volcanic ____ is a chain of volcanoes formed above a subducting plate, positioned in an arc shape as seen from above.