Devin Miller

4. Changes in direction or orientation of the magnetic field of the Earth that have occurred from time to time
8. is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
11. or sliding plate force is a proposed mechanism for plate motion in plate tectonics.
12. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
13. was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It formed approximately 300 million years ago and then began to break apart after about 100 million years
15. also known as conservative plate boundary since these faults neither create nor destroy lithosphere, is a type of fault whose relative motion is predominantly

1. is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault.
2. an instrument used for measuring magnetic forces, especially the earth's magnetism.
3. is the study of the record of the Earth's magnetic field in rocks, sediment.
5. is 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.
6. is a linear feature that exists between two tectonic plates that are moving away from each other.
7. a line on a diagram or map connecting points relating to the same time or equal times.
9. is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.
10. is the movement of the Earth's continents relative to each other, thus appearing to "drift" across the ocean bed
14. is the portion of motion of a tectonic plate that can be accounted for by its subduction