Plate Tectonics

3. The scientist who invented the theory of plate tectonics.
6. the dense central region of a planet, especially the nickel-iron inner part of the earth.
9. when a section of land has too much pressure, it might...
10. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
13. sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
14. the outermost layer of rock of which a planet consists, especially the part of the earth above the mantle.
15. a long, narrow ditch.
16. (of a rock formation) be broken by a fault or faults.
19. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
20. In structural geology, a syncline is a fold with younger layers closer to the center of the structure, whereas an anticline is the inverse of a syncline. A synclinorium (plural synclinoriums or synclinoria) is a large syncline with superimposed smaller folds.

1. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
2. the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat
4. an area on Earth where two or more lithospheric plates collide.
5. the formation of new areas of oceanic crust, which occurs through the upwelling of magma at mid-ocean ridges and its subsequent outward movement on either side.
7. occurs when two tectonic plates move away from each other.
8. was a supercontinent that existed during the late Paleozoic and early Mesozoic eras
11. the region of the earth's interior between the crust and the core, believed to consist of hot, dense silicate rocks (mainly peridotite).
12. places where plates slide sideways past each other.
17. the rigid outer part of the earth, consisting of the crust and upper mantle.
18. large landmass