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| Handy Apparatus Allows Students to See the Air |
Safe, smoke-producing paper creates visible air masses that students can see moving in response to changes in temperature; just add hot and cold water. In only 40 minutes you can reproduce the real air masses that affect our weather, crops, and air pollution. Tube size: 16″L x 2 1/2″ dia.; dish size 4 1/2″ dia. x 2 1/2″H.
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