Students gain first-hand experience on how friction affects motion. They build a hovercraft using air from a balloon to levitate a craft made from a compact disc (CD), learning that a bed of air under an object significantly reduces the friction as it slides over a surface. http://datadiscoverystudio.org/geoportal/rest/metadata/item/f43fcd47b2ea4cd192fd92b97a819d7d/html
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