Across
- 2. These are depressions on the ocean floor.
- 4. A fault rock which is cohesive with a poorly developed or absent planar fabric.
- 5. The shaking is caused by movements in Earth’s outermost
- 6. Type of plate movement is in the San Andreas Fault.
- 8. It is a mountain or hill formed around a vent or opening in the Earth’s crust through which hot materials are expelled.
- 10. Opposite of a convergent boundary.
- 12. Which layer of the Earth has convection currents.
- 13. Is a fracture or zone of fractures between two blocks of rock.
- 14. Which boundary occurs when two plates move away.
- 15. A transform boundary connects two diverging boundaries.
- 17. Is a central valley formed at the summit of the oceanic ridges is the molten materials continuously flow out from the ridges.
- 19. Considered as a small earthquake in underground caverns and mines that are caused by seismic waves produced from the explosion of rock on the surface.
- 20. Where does the ridge push occur.
- 21. Slab pull forces occur at which type of plate boundary.
Down
- 1. Flat sediment that result in the spreading of the sea floor.
- 3. Kind of plate boundary occurs in sea floor spreading.
- 7. Rocks change their shape and volume when they are subjected to.
- 9. Is formed at the base of the continental rise about 4000 to 6000 meters deep.
- 11. Is when the denser plate sinks, gravity pulls on the rest of the plate with a
- 16. It is the submerged volcanoes.
- 18. Is the circulation of material caused by the differences in density.