Unit 1: Intro to Plate Tectonics Crossword

123456789101112
Across
  1. 5. When a denser, heavier oceanic plate slips below a lighter continental plate, it is called ___________
  2. 8. 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
  3. 9. The name of the landmass that existed when all continents were joined as one
  4. 10. ________________ currents: the cycle of heating, rising, cooling and sinking which propels plate movement
  5. 11. A ___________ plate boundary forms where two plates seperate
  6. 12. Seafloor ______________: Occurs at divergent boundaries boundaries in the ocean along a mid-ocean ridge
Down
  1. 1. The layer of the Earth that consist of the crust and the upper mantle, it is responsible for the movement of the plates
  2. 2. A _____________ plate boundary forms where two plates collide
  3. 3. A section of the Earth's crust and upper mantle
  4. 4. The thinnest and coolest layer of the Earth, on which we currently live
  5. 6. Continental ___________: the hypothesis that states that the continents have moved slowly to their current locations
  6. 7. The thickest layer of the Earth, it sits below the crust and is made up of melted rock
  7. 8. A ___________ plate boundary forms where two plates slide past each other