Tectonic Plates

2. Scientist that suggested the plates where moving.
7. What is the name of the boundary when two tectonic plates move away from each other?
10. What tells the history of the earth and animal placement?
11. Sections of the Earth's crust.
15. The gases that surround the earth.
17. Only 21% of the earths atmosphere is made of this gas.
18. The center most part of the earth that is solid.
19. Part of the earth that supports life.
20. The mantle of the earth is __________ ?
22. The water on the earth and in the atmosphere.
24. What type of plate is under the Ring of Fire?
25. Study of the earth.

1. Temperature of Earth and __________ as depth increases.
3. Theory that the continents were once all together, but over Millions of years have moved/drifted and are still moving at about 1-2 inches per year.
4. Outer most surface of the earth.
5. When two plates are moving ________ from each other, causing earthquakes.
6. Deposit of soil.
8. A crack in the earth's crust.
9. Another name for earth.
12. When plates of the earth move toward each other it produces a ______ Boundary.
13. The Super Continent that existed 200 Million years ago.
14. Layer in our atmosphere that contains our ozone layer.
16. Near a Subduction Zone the plate moves under the crust and is dissolved in the _____?
21. Process in which rock are broken down into smaller pieces by the effects of weather.
23. Process in which rock, soil is removed from the surface.