Across
- 1. the formation of new areas in oceanic crust
- 4. Spreads apart pushing older rock farther away
- 6. the border between two plates.
- 8. uses sound waves to locate things in the sea
- 9. discovered seafloor spreading using sonar
Down
- 2. found under the oceans and formed at spreading centres on oceanic ridges
- 3. cause to break away through faulting caused by plate tectonics
- 5. oceanic plate runs into a continental plate and slides beneath it
- 7. Lowland religion that forms where the earth section moves apart.