Across
- 3. a point on earths surface above the focus of an earthquake
- 4. came up with the theory of seafloor spreading
- 5. when two plates move away from each-other
- 9. outer part of earth consist of crust and mantle
- 10. hot fluid within the earths crust
- 11. when two plates collide and one dives under the other
- 13. the center of earth (really hot)
- 14. when rocks are slowly pulled apart
- 16. violent sacking of the ground
- 17. when rock solidifies while lined up with earths magnetic field
- 18. center of an earthquake
Down
- 1. a system of detection of objects under water
- 2. is where two plates slip sideways next to eachother
- 6. a mountain made of cooled magma
- 7. when rocks are squashed together
- 8. an elastic wave produced by earthquakes
- 12. the uper layer of earths mantle
- 15. a volcanic rock