Crossword Puzzle

6. boundary that seperates the crust and the mantle
7. he proposed the Seafloor Spreading together with Dietz
9. core:It is made up of solid iron and nickel
10. remains or traces of organisms from the remote past
12. outermost and thinnest layer of the Earth
13. that can only travel through the surface of the Earth
14. a Greek word which means "All Earth"
16. seismic waves are recorded
18. wave that cause the most damage to structures during an earthquake
19. deposits: evidence that leads to the idea that Antartica once experienced a tropical climate
20. evidence where the rock formations in Africa line up with that in South America as if it was a mountain range

1. the outermost rigid shell
2. the process in which the crust plunges back into earth
3. branch of geology that deals with the that shaprs the Earth's crust
4. the force that drives the plates to move around
5. boundary
8. pull: is the portion of motion of a tectonic plate that can be accounted for by its subduction
11. Gondwanaland and ______ are the two smaller supercontinent
15. during this period Pangaea started to break into two smaller supercontinents
17. seafloor: destroyed at the subduction zone and melts in the mantle