Plate Tectonics

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Across
  1. 2. the force pushing on a surface
  2. 6. heat transfer by the move meant of a heated fluid
  3. 7. a measure of how much mass there is in a volume of a substance
  4. 8. breaks in earths crust where rocks slipped past each other
Down
  1. 1. a dense ball of solid material
  2. 3. a trace of an ancient organism that has been preserved in rock
  3. 4. scientists who study the forces that make planet earth
  4. 5. solid layer of hot rock