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Springs


Springs

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Item Number:
SM V6028
Price:
$19.95
Format:
DVD
     Click for VHS Format   
Length:
13 min.
Copyright:
2002
Closed Caption:
Yes
Producer:
Schlessinger Media
Grade Level:
3 - 6
ISBN:
1417100745
UPC:
753201111531
Summary:
In Springs, a visiting inventor observes a family harvesting coconuts on Mammoth Island, using a number of devices called springs. Springs come in two shapes: There are coil springs, and there are bending bars -- called "leaf springs"-- which is what the islanders use to improve their coconut collecting. When a spring is bent, the molecules on one side are pushed together while the molecules on the other side are pulled apart. So once the bending force is removed, the molecules rapidly "spring" back into their natural places. Springs store potential energy when they are stretched or compressed. This stored energy is transferred to the energy of motion -- causing the coconuts to go flying through the air! Part of the multivolume The Way Things Work DVD Series, based on the best-selling book by David Macaulay. A teacher's guide is included and available online.

Only available in the US.


Series Name:
    Way Things Work, The



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