Wednesday, November 4, 2009

How Static Electricty Works

Dancer has been learning about cells and electric potential in nerve cells. We did the project shown below to see electric charges influencing an object, and to have fun.

Dancer and a Balloon.

When Dancer rubs the balloon on her hair some electrons move from her hair onto the surface of the balloon. The hair is positive (relative the balloon), so the hair reaches towards the ballon that is negative
(relative to the hair). Opposites attract, so they say. Like opposite poles of a magnet.

The balloon has a negative charge in relation to any dense object, here it is, sticking to the ceiling.

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