Plate Tectonics Plate tectonics are a relatively new theory that has revolutionized the way geologists think about the Earth. According to the theory, the surface of the Earth is broken into large plates. The size and position of these plates change over time. The edges of these plates, where they ...

The land below us is always in motion. Plate tectonics studies these restless effects to give us a better understanding of the Earth and its past. New molten rocks are poured out in the form of magma from the mid-ocean ridges. The rock is recycled and re-entered back into the earth in deep ocean tr...

World Geography 3202 Chapter 1 "Land form Patterns and Processes" 1. What is seismology? Is the study of earthquakes. 2. List the zones of the earth. For each zone state the thickness, and two features of each. (A) Inner Core: 2700 km, solid and made mostly of iron wi...