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PHYSICS BLOG ON TRANSFER OF THERMAL ENERGY! (:
Monday, July 20, 2009
proudly done by alyssa and me! (:
There are 2 spoons, one plastic and the other metal and equal amouts of butter is smeared on the spoons at the same level. They are put into a cup of very hot water. The butter on the metal spoon melted faster than the butter on the plastic spoon. This is because metals are better conductors of heat than non metals.
the match glows (because of radiation) but does not light up as air is a bad conductor of heat!
ignore the hands, thanks, (:
you can see the heat rising in the shadow! (:
The candle heats up the air above the candle, causing the air to have more kinetic energy and allowing it to have more space between the molecules. Therefore, it becomes less dense and rises, causing the spiral to turn.
Cold red dye and hot green dye are put into a transparent tub. The red dye sinks while the green dye rises. This is because the molecules in the hot dye has more kinetic energy and vibrates faster, causing it to have more space between the molecules. As such, it will become less dense and rises. As the molecules in the cool dye has less kinetic energy, it would in turn be denser than the room temperature water and sinks.
Results,
Labels: video
now you notice i talk a lot!