Plate Tectonics

4. What evidence led him to believe the continents may have fit together
5. Place where two plates are moving apart is called a _____ boundary
7. Islands form when a plate moves over a stationary what in the mantle
11. Instrument used to detect vibrations in the Earth
12. The strain when two plates are pushing together
13. Layer below the crust that is mostly solid but can move like silly putty due to great heat and pressure
14. Deep underwater depression
17. The man who discovered the continents may have fit together
19. Underwater volcanic mountain chains
23. Liquid part of the center (Second layer from center)
25. The strain when two plates are pulling apart
26. Two plates pulling apart can create what
28. The outermost layer of the Earth (You walk on it!)

1. The point directly above the focus during an earthquake
2. Center of the Earth made of metals like iron and nickel
3. Layer below the crust that is cooler and more brittle (Upper portion of the Mantle)
6. Under the ocean, the process when plates diverge and new crust is formed is called
8. Name for the supercontinent
9. California has many earthquakes because it sits on a
10. Seismic waves are measured using which scale
15. The process where heat rises from the bottom, spreads and then cools
16. The structure that is created when the plates move and release pressure from within the Earth
18. What happens when two plates slide and grind past each other
20. Place where two plates are moving together is called a ____ boundary.
21. Waves of energy that travel through the ground
22. Two plates colliding can create what
24. The point that the earthquake originated
26. An earthquake in the ocean can cause this
27. The strain when plates are moving sideways