Across
- 5. faster wave from an earthquake, can travel through any medium
- 6. When two plates move towards each other and collide; creates subduction zones, earthquakes, and mountains
- 9. thicker, older, less dense part of the lithosphere
- 11. cycling of the asthenosphere, with warm materials rising and cool materials sinking. Responsible for continental drift
- 17. change in the orientation of Earth's magnetic field where magnetic north and magnetic south switch
- 18. term for the super continent which contained all the continental plates together
- 22. The soft layer of the mantle on which the lithosphere floats.
- 24. 1) continental fit, 2) similarity of plant and animal fossils 3) similarity of rock sequences
- 25. underwater mountain ranges formed by seafloor spreading at divergent plate boundaries, where new crust is formed
Down
- 1. The process where dense oceanic crust sinks beneath less dense continental crust at a convergent plate boundary; creates trenches
- 2. A theory stating that the earth's surface is broken into plates that move.
- 3. Molten rock beneath the earth's surface
- 4. Ocean crust is younger than continental, symmetrical pattern of magnetic polarity reversals recorded by rocks, mid-ocean ridge
- 7. densest, hottest layer of the earth
- 8. the interior of the earth is organized based on…
- 10. slower wave from an earthquake, can only travel through solids
- 12. thinner, younger, denser part of the lithosphere
- 13. Molten rock that reaches the surface
- 14. the rigid outer part of the earth
- 15. scientist who came up with the continental drift theory
- 16. measures the waves created by an earthquake
- 19. The hypothesis that the continents slowly move across Earth's surface.
- 20. when two plates move away from each other, exposing the magma of the mantle. Creates midocean ridges
- 21. When two plates slide against each other; causes earthquakes
- 23. an area of lithosphere over a mantle plume. Creates volcanic activity