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Our Earth

Rock Recipes (#106)

Igneous, sedimentary and metamorphic rocks are discussed.

Education Record Rights: Fixed expiration date - Jun 30, 2010.

Program Description: Presented by young scientists, OUR EARTH is a new series that looks at the science of geology -- fossils, the Earth's core, tectonic forces, and the impact of the sun, wind and water. It also discusses why we need to understand geology.

All Upcoming Episodes

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  • How Old Is It? (#101)

    Geology as a science began with the Industrial Revolution in England. Rock strata were studied and compared and an amazing conclusion was drawn--our Earth is unbelievably old.

  • Fossils (#102)

    A fossil is a trace of a living thing left in a rock. Fossils offer a three-part challenge. First is to reconstruct the organism itself, then to reconstruct the world it lived in, then to understand its place in time and evolution.

  • The Fires Below (#103)

    The interior of the Earth is very hot. Clues leave us to believe there is a metallic core surrounded by a rocky mantle. Huge, slow convection currents rise up, often resulting in earthquakes and volcanoes.

  • Pushing and Shoving (#104)

    Tectonic forces and their end products are discussed.

  • Wear and Tear (#105)

    The forces of the sun, wind and water change the face of the Earth.

  • Rock Recipes (#106)

    Igneous, sedimentary and metamorphic rocks are discussed.

  • Who Needs Geology? (#107)

    This program discusses the importance of geology and why we need to understand many of its basic findings.

Past Episodes

These episodes of Our Earth aired in the last few months on Iowa Public Television.

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