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If Earth’s entire history could be compressed into a single year, modern humans would’ve appeared just 23 minutes ago! Use this video to introduce your students to the concept of geological time (also called deep time); relative age dating of rock via the principles of stratigraphic superposition, original horizontality, and cross-cutting; absolute age dating by radioactive decay; the chemical elements, heavy and light, that make up the planet; and Earth’s three main layers: crust, mantle, and core. A viewable/printable instructor’s guide is available online. Correlates to National Science Education Standards, National Educational Technology Standards, and Standards for the English Language Arts. A Cambridge Educational Production. (22 minutes)



 
                        

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Copyright date: ©2006



Part of the Series : Cambridge Core Science Series: GeoBasics | Librarian Special-Science
     


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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)
 
Geocycles
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Planet Earth is an amazing machine, and we-and our future-are riding on it. This video introduces students to the Earth system's primary interacting subsystems (the biosphere, geosphere, hydrosphere, and atmosphere); the nitrogen, carbon, and water c...(more details)
 
Plate Tectonics
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Studies of our planet's crust, or lithosphere, suggest that it's not a single solid layer at all. This video illustrates the process of scientific inquiry by studying the evolution of our understanding of plate tectonics, the dynamics of those ever-s...(more details)
 
Rocks and Minerals
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Knowledge of the physics and chemistry of the planet's "bones" is essential to a complete understanding of Earth science. Ranging from the Mohs scale and specific gravity to silicates, carbonates, and halides, this video delves deeply into the compos...(more details)
 
Oceans and Seas
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More than 70 percent of the Earth's surface is covered by water. Use this video to impress upon your students the importance of the seven seas to people, the marine food chain, and the planet as a whole. Topics include the various kinds of currents a...(more details)
 


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