Pressure

Pressure

DVD - 2003
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The inhabitants of Mammoth Island work together to retrieve a wedding ring that has fallen down a sink drain. They discover what a straw, a plunger, a vacuum and a jackhammer all have in common and the differences and similarities between air pressure (pneumatic machines) and liquid pressure (hydraulic machines).
Publisher: Wynnewood, PA : Schlessinger Media, [2003], c2002.
ISBN: 9781417100675
1417100672
Branch Call Number: j DVD 621.2 WAY THIN PRESSURE
Characteristics: 1 videodisc (13 min.) : sound, color ; 4 3/4 in.
Additional Contributors: Macaulay, David Way things work.

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