Across
- 5. includes the crust and upper mantle
- 6. movement in the mantle that occurs because hot magma rises and cool magma sinks
- 7. theory that states the Earth's crust is divided into plates that move due to the convection in the mantle
- 10. a boundary in which two plates separate
- 13. process that makes a mid-ocean ridge
- 14. theory that says the continents are moving
Down
- 1. a boundary where two plates slide past each other
- 2. the layer of the Earth that houses magma
- 3. a boundary in which plates are colliding
- 4. the scientist who came up with continental drift
- 8. a deep valley in the ocean floor found at subduction zones
- 9. where one plate slides under another due to a difference in density
- 11. the supercontinent where all landmasses where connected
- 12. crack in the crust where two plates are moving past each other