Madison Kloster

4. the branch of geophysics concerned with the magnetism in rocks that was induced by the earth's magnetic field at the time of their formation.
5. the gradual movement of the continents across the earth's surface through geological time.
6. sliding plate force is a proposed mechanism for plate motion in plate tectonics.
8. 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.
10. a linear feature that exists between two tectonic plates that are moving away from each other.
11. an instrument used for measuring magnetic forces, especially the earth's magnetism.
12. the portion of motion of a tectonic plate that can be accounted for by its subduction.
13. a large elongated depression with steep walls formed by the downward displacement of a block of the earth's surface.

1. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
2. a line on a diagram or map connecting points relating to the same time or equal times.
3. Changes in direction or orientation of the magnetic field of the Earth that have occurred from time to time.
5. an actively deforming region where two or more tectonic plates or fragments of the lithosphere move toward one another and collide.
7. the hypothetical landmass that existed when all continents were joined.
8. where two of the tectonic plates slide alongside each other.
9. a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.