Plate Tectonics Review
Across
- 6. These can occur at a transform boundary and are often hotspots for earthquakes (two words)
- 8. _ spreading is the concept that magma rising from the mantle will push plates apart
- 9. This physical layer of the Earth is broken into plates that move above the asthenosphere
- 10. _ currents are the movement of materials based on density. More dense sinks while less dense rises
- 12. This boundary occurs where two plates meet and come together
- 13. The name given to the massive supercontinent
Down
- 1. The remains of dead plants and animals that helped with proving Wegener's theory
- 2. This boundary occurs as two plates move away from one another
- 3. During this process within a subduction zone, the denser oceanic plate slides under the continental and is pulled down by gravity (two words)
- 4. _ drift is the concept that the continents are always moving
- 5. This boundary occurs where two plates move past one another
- 7. A _ zone is where a more dense plate of oceanic crust will slide below a less dense continental plate
- 11. During this process within a subduction zone, magma moves up through the opening and pushes the plates apart (two words)