Plate Tectonics
Across
- 1. when two plates under the ocean diverge and move apart they create a mid-ocean what
- 5. last name of scientist who discovered sea-floor spreading
- 6. the solid outer layer of the Earth
- 8. plate boundary where plates are colliding
- 9. the coal fields of North America and this continent match up
- 10. scientist who proposed the continental drift theory
- 13. oceanic crust is mainly this type of rock
- 15. pangaea broke apart 175 what years ago
- 17. supercontinent
- 18. South America and this continent look like they actually fit together
- 19. Ring of Fire is a long chain of what in the pacific ocean
- 20. scratches in rocks that are created by glaciers moving
Down
- 2. crust is neither created or what (only cycled on the planet)
- 3. overall long-term weather of a certain area
- 4. when two continental plates diverge and move away from each other they create a rift what
- 7. fossils of the same what are found on separate continents
- 11. caused when plates move and the earth shakes
- 12. Type of current in the mantle where magma moves up and down dragging the plates across the Earth
- 14. mountain chain that consists of the same rocks as the British Isles
- 16. plate boundary where plates are moving away from each other