This is a video pod cast on iTunes called Booming Sands. It was sand in Death Valley, California that they were talking about making a booming sound when friction is happening. This was interesting because I did not know sand could make a booming sound.
Video pod casts are cool. Regular pod cast are kinda like talk radio to me. But with video you can use charts and other things to deminstrate what you are talking about and I think students would like that better. This podcast can be used during a science class.
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