Earth's Interior

Cross Section of the Earth

You may wish to print a copy of the lecture outline (minus the illustrations) and you have two options:

• Microsoft Word if you use that Word Processor or
• A Netscape Document that you can print (use the Left Arrow key to return to this page).
• Or, you may view the Earth's Interior power point presentation shown in class.

Chapter Objectives

After reading Chapter Seventeen, you should be able to:
1. Review the types of seismic waves, and compare and contrast the properties of these waves.
2. Explain how geologists have used seismic waves to explore Earth's interior.
3. Portray a cross-section of the Earth.
4. Compare and contrast the core, mantle, and crust and the lithosphere and the asthenosphere

Introduction

In the reference given by the chapter title you will learn how measurements are being made which lead to refinement of the theory of plate tectonics.

Class Notes

Internet Resources

A long, long time ago I used to read every book by Edgar Rice Burroughs book that I could get my hands on. If you like science fiction you might like to read the first chapter of this one: The Earth's Core

The Earth's Interior and Plate Dynamics

Virtual Field Trip

Wegener hypothesized that 200 million years ago India was south of the equator. Many geologists have studied the interaction between India and the Eurasian continent - the Himayala.

TIBET: A VIRTUAL FIELD TRIP -- "Inaccessible Tibet. These words conjure images of remote mountains inhabited by yeti and adepts who sit naked in the snow, warmed by elevated body temperatures. Tibet has remained a very difficult place to visit and is more fantastic than imagined. It is a land of immense contrasts: snowy peaks and sandy deserts, barren plateaus and forested mountains, empty expanses and crowded cities, and a deeply religious people ruled by an avowedly atheistic government. "

Learning about geology from a computer screen is only half as fun as enjoying it in the field!

Self-Quiz

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Copyright by John C. Butler, July 29, 1995