Zach Bombs

3. The branch of geophysics concerned with the magnetism in rocks.
6. An instrument used for measuring magnetic forces, especially the earth's magnetism.
7. The portion of motion of a tectonic plate that can be accounted for by its subduction.
8. Changes in direction or orientation of the magnetic field of the Earth that have occurred from time to time.
9. A theory in geology the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.
14. A proposed mechanism for plate motion in plate tectonics.
15. The sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.

1. A line connecting points to the same time or equal times.
2. The movement of the Earth's continents relative to each other.
4. A type of fault whose relative motion is predominantly horizontal in either sinistral or dextral direction.
5. A linear feature that exists between two tectonic plates that are moving away from each other.
10. A large elongated depression with steep walls.
11. Supercontinent that existed during the late Paleozoic and early Mesozoic eras.
12. An actively deforming region where two tectonic plates move toward one another and collide.
13. A process that occurs at mid-ocean ridges.