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 Living Machine We live in an extraordinary era of exploration. We are now able to reach far out into space and deep down into the ocean. We have the advantage with technology such as computers and satellites. We can now simply understand the dynamic forces that shape our Earth. Our E...

Since it's early beginnings some 4.6 billion years ago, the earth has been constantly changing its face. Oceans have become deserts and what was once mountainous terrain has found itself submerged in salt water oceans. Underwater volcanoes create new surfaces daily which one day may host a n...

Plate Tectonics Prior to World War II, humans were conformed with the idea that the Earth and its continents had been basically unchanged since the beginning of time. A German meteorologist, Alfred Wegener observed that the coastlines of the seven continents could be fitted together almost perf...

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...

Most people know about the prehistoric land that scientists have named Pangaea, but few know what it looked like, was like, and how it separated over millions of years. The hypothesis is now widely accepted and may soon become scientific law. I will explain the plate tectonics theory, Pangaea's...

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...