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