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