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The Earth’s surface is a fragile mask, and this Science Screen Report reveals the turmoil beneath it. A cutaway view of the planet depicts its layers—including its crust, hot mantle, and superheated core—and leads to an outline of plate tectonic theory. The Himalayas, the Matterhorn, and the Hawaiian Islands are analyzed as examples of tectonic and volcanic activity, while the core’s relationship to Earth’s magnetic field is also studied. The program includes animation that clearly demonstrates the concept of subduction. A viewable/printable instructor’s guide is available online. Produced in association with the Accreditation Board for Engineering and Technology and the Junior Engineering Technical Society. (13 minutes)



 
                    

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Copyright date: ©1999




     


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Be Prepared for Global Warming
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Environmental Issues and Human Impact
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This video looks at urgent environmental concerns facing planet Earth and what people can do to repair the degradation humans have caused. Air and water pollution, the effects of pollution on health and the environment, deforestation and loss of wetl...(more details)
 
Energy and Resources
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The Sixth Extinction: The Human Role
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The five extinctions that have impacted the Earth over the past 400 million years-the Ordovician-Silurian, Late Devonian, Permian-Triassic, End Triassic, and Cretaceous-Tertiary-may be set to include another one on a massive scale. This alarming prog...(more details)
 
Atmosphere, Climate, and Weather
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People everywhere are interested in the weather, but how does it all work? Beginning with Earth's atmosphere-its evolution, its gaseous composition, and its four regions-this video takes a close look at how conditions combine to create climate and we...(more details)
 


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