Crossword Puzzle

5. waves that can only travel through the surface of the Earth
6. a wave that cause the most damage to structures during an earthquake
7. deposits evidence that leads to the idea that Antartica once experienced a tropical climate
10. the process in which the crust plunges back into earth
12. a Greek word which means "All Earth"
13. destroyed at the subduction zone and melts in the mantle
15. is the force that drives the plates to move around
17. he proposed the Seafloor Spreading together with Dietz
18. it is made up of solid iron and nickel
20. during this period Pangaea started to break into two smaller supercontinents

1. the outermost and thinnest layer of the Earth
2. Gondwanaland and ______ are the two smaller supercontinent
3. is the portion of motion of a tectonic plate that can be accounted for by its subduction
4. mantle-core boundary
8. the outermost rigid shell
9. the boundary that seperates the crust and the mantle
11. where seismic waves are recorded
14. preserved remains or traces of organisms from the remote past
16. branch of geology that deals with the that shaprs the Earth's crust
19. evidence where the rock formations in Africa line up with that in South America as if it was a mountain range