Across
- 2. The thin and solid outermost layer of the Earth above the mantle
- 4. extremely deep areas in the ocean that are created by a subducting plate
- 6. The solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle
- 9. current hot less dense material rises and denser material sinks in the mantle driving plate movement
- 10. term for the super continent which contained all the plates together
- 11. Process by which new oceanic crust forms as magma rises towards the surface and solidifies at the mid - ocean ridge
- 13. process in which two plates collide and the denser (heavier) ocean plate descends below the other
- 14. Underwater mountain range made at divergent plate boundaries
- 15. The theory that the earth is broken into plates and are in motion due to convection currents in the asthenosphere (upper mantle)
Down
- 1. The boundary between tectonic plates that are sliding past each other horizontally
- 3. The boundary formed by the collision of two plates
- 5. Proposed the continental drift theory in the 1900s
- 7. Hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
- 8. The soft layer of the mantle on which the tectonic plates move
- 12. The boundary between two tectonic plates that are moving away from each other