Plate Tectonics Vocabulary

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Across
  1. 3. The type of boundary where two tectonic plates slide past each other horizontally.
  2. 7. The solid, outermost layer of the Earth that includes the crust and upper portion of the mantle.
  3. 9. A chain of island volcanoes that form when two oceanic plates converge.
  4. 10. The theory that explains the movement and interaction of the Earth's lithosphere (the rigid outer shell) and how it is divided into several large and small plates.
  5. 12. The partially melted layer of the Earth located beneath the lithosphere.
  6. 13. The transfer of heat in a fluid (liquid or gas), caused by differences in temperature and density.
  7. 14. The occurrence of earthquakes and other ground vibrations.
  8. 15. The type of boundary where two tectonic plates move apart or separate.
Down
  1. 1. The type of boundary where two tectonic plates collide or come together.
  2. 2. An underwater mountain range formed by volcanic activity where new oceanic crust is created. Formed when two oceanic plate boundaries diverge.
  3. 4. The process in which one tectonic plate is forced beneath another plate and sinks back into the mantle.
  4. 5. A long, narrow valley formed by the separation of tectonic plates. Formed when two continental plates diverge.
  5. 6. The hypothesis that suggests that the continents were once a single landmass and have since moved apart.
  6. 8. A mountain or hill that has a vent through which lava, gases, and other materials erupt from beneath the Earth's surface. Formed at convergent plate boundaries.
  7. 11. The thin and solid outermost layer of the Earth.