Unit 5: Intro to Plate Tectonics Crossword

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Across
  1. 2. A section of the Earth's crust and upper mantle
  2. 4. The thinnest and coolest layer of the Earth, on which we currently live
  3. 6. Plate ____________: the theory that the Earth's crust and part of the upper mantle are broken into parts, called plates, that move on top of the mantle
  4. 9. Molten material that has come out of a volcano
  5. 11. The thickest layer of the Earth, it sits below the crust contains the layer known as the lithosphere
  6. 12. The sudden shaking of the ground along a fault that is the result of movement within the Earth's crust
  7. 13. When a denser, heavier oceanic plate slips below a lighter continental plate, it is called ___________
Down
  1. 1. The name of the landmass that existed when all continents were joined as one
  2. 3. The layer of the Earth that consist of the crust and the upper mantle, it is responsible for the movement of the plates
  3. 4. Inner ___________ the inner most layer of the Earth where temperatures are about as hot as the surface of the sun
  4. 5. Seafloor ______________: the theory that continents are moving apart due to the movement of heat and less dense material along faults in the oceans/seas creating mid-ocean ridges and other under water features.
  5. 7. ________________ currents: the cycle of heating, rising, cooling and sinking which propels plate movement
  6. 8. Molten material inside the Earth
  7. 10. Continental ___________: the hypothesis that states that the continents have moved slowly to their current locations