I explored a video podcast that was on Iltunes. This podcast was apart of the 6th through 8th grade section. The title of the video podcast was called Booming Sands, NOVA Science Now. There were scientists from California that were trying to discover how sands dunes boom. So they set out on a journey to dunes in California. These particular dunes were 1 out of 30 that make these sounds. The scientists brainstormed about what caused the sound by making a hypothesis, that the top layer of sand is first potential energy, then when the sand moves it is then kinetic energy. So the scientists set of avalanches that caused the booming. Then after they figured out how to set avalanches, they then put Geo phones in the dunes to measure the boom affect. The readings were transmitted back to a lab so that the readings could be documented. The findings were that the dunes were making the musical note G. The sand particles were found out to be the same size and shape, causing them to rub together and vibrate to make the low G sound. This was called Acoustic Energy.
I thought that this would be great to use in classes. This is a great way to introduce new science vocabulary words to students. Also a way for them to have a moving, active, visual of the new material. Children like to see things in motion. This could also give the teacher ideas on maybe how to simulate a particular things, by using materials. I think that this is a great way for teachers to have access to these videos for free.
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