plate motion

2. drift:the movement of continents resulting from the motion of tectonic plates
3. type of fault in which two tectonic plates slide past one another.
10. extremely hot center of Earth, another planet, or a star
11. on the surface of the Earth that is directly above the underground point (called the focus) where fault rupture commences, producing an earthquake.
13. release of energy through the earth's crust in the form of seismic waves.
15. where two plates move away from each other
16. a measurement of earthquakes.
17. boundary: A tectonic boundary where two plates are moving toward each other.
19. mostly-solid bulk of Earth's interior.
21. the place inside Earth's crust where an earthquake originates.
23. an oceanic plate runs into a continental plate and slides beneath it.

1. used to record the motion of the ground during an earthquake.
4. view or drawing that shows what the inside of something looks like after a cut has been made across it.
5. all the Earth.
6. large continuous mass of land conventionally regarded as a collective region.
7. the study of the structure of the earth's crust and mantle with reference to the theory that the earth's lithosphere is divided into large rigid blocks.
8. measure of the size of an earthquake based on observation of the effects of the shock at the earth's surface.
9. tectonic boundary where two plates are moving toward each other.
12. or zone of fractures between two blocks of rock.
14. plate:massive slab of solid rock made up of Earth's lithosphere (crust and upper mantle)
18. outermost shell of a terrestrial planet.
20. super massive wave
22. wave:shock waves in solid rock generated by earthquakes or underground explosions.