Across
- 1. The solid portion on which we stand on
- 2. The innermost part of the Earth
- 4. The study of the formation and movement of these plates is called?
- 7. These travel at about 6-7 km per second
- 9. How have scientist learned what makes up the planet's interior
- 11. These waves are picked up by seismographs
- 12. When lithospheric plates slide past each other, a break or crack in the earth can occur
Down
- 1. These are created when heating causes material to expand and rise
- 3. the crust and the upper portion of the mantle
- 4. Ocean The largest belt is located where?
- 5. layer within the mantle
- 6. This occurs when stresses build up and fractures occur
- 8. How many layers of Earth are there?
- 10. A plastic but solid material