Plate Tectonics

4. The outer most part of the Earth's geosphere.
6. New crust is created here.
12. Type of plate boundary where the plates are moving towards each other and colliding.
14. Wegener used evidence of ________ on the continents of South America and Africa to show that they were once next to each other.
15. Plastic-like layer of the mantle in which the tectonic plates float on top of.
16. The term for the super continent that all current continents broke apart from.
18. The theory that the youngest rock is created in the middle of the ocean and then gets pushed to the outer part of the ocean and then destroyed.
20. Type of plate boundary where the tectonic plate slide passed each other.
22. When two oceanic crusts converge, the older and ______ plate subducts under the younger plate.
23. The process of one piece of crust sinking under the less sense piece of crust.
24. The type of crust that is the least dense.

1. Circulation of material where the hotter material rises and the colder material sinks, creating movement.
2. Type of plate boundary where the plates are moving away from each other.
3. Locations in the ocean where the oceanic crust is subducting under continental crust.
5. Land formation that is created when two pieces of continental crust are diverging.
7. The scientist who proposed that the continents have moved from their original places.
8. The theory of Continental _______ is the theory that the land on Earth has moved and will continue to move. That the land was not always where it is seen today.
9. The lithosphere is broken into different pieces that are called _____.
10. Land formations that are typically found on the land near and oceanic - continental crust convergent boundary.
11. The crust and top part of the mantle are collectively known as the ______.
13. The technology used to map the bottom of the ocean floor.
17. When two oceanic crusts converge, volcanic ______ can form over time as the magma is forces back up through the crust and cooled.
19. When tectonic plates move at transform boundaries it results in what events?
21. Type of crust that is the most dense and sinks.