Plate tectonics
Across
- 2. a large dip in a mid ocean ridge
- 3. a large range of mountains that spread across the ocean floor
- 5. magma on the surface
- 6. when one plate sinks below another
- 9. transfering heat from materials that are touching
- 10. plates that move towards each other
- 13. a break in earth's crust
- 14. the process in which hot fluids become LESS dense and rise and colder fluids become MORE dense and sink
- 16. the process in which a mid ocean ridge releases magma onto the ocean floor making it expand
- 17. plates that move away from each other
- 18. the name of the super-continent
- 19. traces of ancient organisms preserved in rock
- 20. how much mass is measured to be in an object
Down
- 1. heat being transfered by a fluid
- 4. a string of islands created by volcanoes
- 7. the idea that the continents slowly drift
- 8. an area in earth's crust where material rises through and melts creating magma
- 11. the large crack that runs through a mid ocean ridge
- 12. a molten mixture of rock gases and water from the mantle
- 15. plates that slide past each other