Plate Tectonics

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Across
  1. 2. the layer of hot, solid material between Earth’s crust and core
  2. 3. vibrations that travel through Earth carrying the energy released during an earthquake
  3. 4. a usually light-colored igneous rock that is found in continental crust
  4. 6. a measure of how much mass there is in a volume of a substance
  5. 8. the name of the single landmass that broke apart 2 million years ago and gave rise to today's continents
  6. 10. heat transfer within a material or between material that are touching
  7. 11. the hypothesis that the continents slowly move across Earth's surface
  8. 12. transfer of heat by the movement of currents within a fluid
  9. 13. a layer of molten iron and nickel that surrounds the inner core of Earth
  10. 16. the force exerted on a surface divided by the area over which the force is exerted
  11. 17. a rigid layer made up of the uppermost part of the mantle and the crust
Down
  1. 1. the flow that transfers heat within a fluid
  2. 5. the transfer of energy through space
  3. 7. a dense sphere of solid iron and nickel at the center of Earth
  4. 9. the soft layer of the mantle on which the lithosphere floats
  5. 14. a dark, dense, igneous rock with a fine texture, found in oceanic crust
  6. 15. the layer of rock that forms Earth’s outer surface