Lecture 28: Inside the Earth

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Astronomy 161 - Introduction to Solar System Astronomy

Richard Pogge

49 episodes

9 months ago

Welcome to the Astronomy 161 Lecture Podcasts. This is a brief message from me explaining the podcasts, and welcoming new and old listeners. University. Lectures will begin on Wednesday, 2007 Sept 19, and run through Friday, 2007 Nov 30. New lectures will appear shortly before 6pm US Eastern Time each day there is a regular class. Recorded 2007 Sep 19 in 4037 McPherson Lab on the Columbus campus of The Ohio State University.

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Lecture 28: Inside the Earth

Astronomy 161 - Introduction to Solar System Astronomy

18 years ago

Lecture 28: Inside the Earth

What is the interior structure of the Earth? We will start our exploration of the Solar System with our home planet Earth. This lecture discusses the interior structure of the Earth, introducing the idea of differentiation, how geologists map the interior of the Earth using seismic waves, and the origin of the Earth's magnetic field. I describe the basic properties of the crust of the Earth, its division into rigid tectonic plates, and describe how plate motions driven by convection in the upper mantle have shaped the visible surface of our planet over its dynamic history. Recorded 2007 Oct 30 in 1000 McPherson Lab on the Columbus campus of The Ohio State University.