Heat water in "O" shaped tube adding a dye.

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(C)Properties of Heat and Matter - C+20: Convection

Heat water in "O" shaped tube adding a dye. "O" tube is filled with clear water. Bunsen burner causes convection current. Food color is added at the top, and current is visible. CONVECTION.
UCB Index: 
C+20+0
PIRA Index: 
4B20.10
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C+15+4 Computer demo: Conductivity (see C+15+3), runs 5 min.
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C+20+5 Crooke's radiometer with flashlight, arc lamp or IR source.