Plate Tectonic Theory

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Across
  1. 3. The solid surface of Earth consisting of landforms, such as mountains, valleys, caves, and the ocean floor.
  2. 5. The dense, solid metal center of earth; it consists of mostly iron and nickel.
  3. 6. The Theory that Earth's continental and oceanic crusts consist of large landmasses, or plates, whose movement creates valleys, mountains, deep-ocean trenches, earthquakes, and volcanoes.
  4. 9. A border between two plates that are moving away from each other.
  5. 10. The soft layer of the mantle below the more rigid lithosphere.
  6. 11. A place where two plates slide past each other.
Down
  1. 1. The crust and the solid uppermost part of the mantle.
  2. 2. A thick main layer of Earth that lies between the crust and outer core.
  3. 4. The hot, solid center of earth.
  4. 7. A place where two plates come together.
  5. 8. A break in Earth's surface where huge blocks or slabs of rock slide past each other.
  6. 12. A chain of mountains encircling Earth for more than 40,000 on the ocean floor.