plat tectonics

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Across
  1. 6. what plate tectonics are made of
  2. 8. the rigid outer part of the Earth
Down
  1. 1. what is formed when cracks in the Earth are made and magma can rise through
  2. 2. currents the movement of tectonics plates, made by heat and pressure
  3. 3. the line formed by the intersection of a horizontal plane and inclined surface
  4. 4. a stress which stretches rock in 2 opposite directions
  5. 5. the border between 2 plates
  6. 7. tectonics the Earth's surface is cracked into large pieces