PLATE TECTONICS

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Across
  1. 2. is a type of plate boundary where two tectonic plates move away from each other, often creating new ocean floor.
  2. 3. is the semi-liquid, plastic-like layer of the mantle on which the tectonic plates float and move.
  3. 7. is a type of plate boundary where two tectonic plates move toward each other and collide.
Down
  1. 1. is the rigid outer part of the earth, consisting of the crust and upper mantle.
  2. 4. is the process where one tectonic plate sinks beneath another plate into the mantle.
  3. 5. is a type of plate boundary where two plates slide past each other horizontally, often causing earthquakes.
  4. 6. is the name of the ancient "supercontinent" that existed 200 million years ago before the plates drifted apart.