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Does Hair Color Affect Static Electricity?

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Author: TaniaDakka

Every winter, you get zapped; it never fails! Static electricity—an electric charge caused by things touching together—is one of those strange forces that you can't see, but you can feel (like gravity). If you've ever rubbed a balloon across your hair and then watched it stand on its end, you have seen the effects of static electricity.

Everyone's hair is different; long, short, thick, thin, straight, curly and a rainbow of hues. But does hair color affect static electricity?

Problem:

Do different hair colors have different effects on static electricity?

Materials:

  • 12 lightly colored balloons, all the same size
  • Air pump (optional)
  • Timer
  • 1 red-haired friend
  • 1 brunette (brown-haired) friend
  • 1 black-haired friend
  • 1 blonde friend
  • Clear wall space
  • Notebook
  • Pencil
  • Permanent marker

Procedure:

  1. Before you begin your project, consider what you already know about static electricity: At what times do you notice feeling a shock (or spark) of static electricity? Think about your hair. What color is it? How are your tresses the same, and different, than someone who has a different color of hair? What happens when you rub a balloon on your head? Write down any notes in your notebook.
  2. Using your notes, make a guess about what will happen to the balloons as you rub them on brown hair, blonde hair, black hair and red hair. Make one guess for each color of hair. Does hair color affect static electricity? Write down this guesses—called hypotheses—in your notebook.
  3. With an adult's help, fill up each of your lightly colored balloons. Blow up the balloons so they're all roughly the same size. You can use your breath or an air pump to blow them up. Close each balloon with a secure knot.
  4. Using the permanent marker, carefully write "Red" on three balloons, "Brown" on three more, "Blonde" on the next three, and "Black" on the last three. You're going to test each hair color three times—just like you should with any science project.
  5. Using the balloon marked "Red" on your red-headed friend, rub the balloon on his or her hair.
  6. Once you've made the hair stand, stick the balloon to the wall and use the timer to time how long it stays on the wall. When the balloon begins to fall, stop the timer.
  7. In your notebook, create a table like the one outlined below. You should have 13 rows and 4 columns. The far left column should have the hair colors listed (Red, Brown, Blonde, Black). Then, each column should list the time trials (Time 1, Time 2, Time 3).
  8. In the column labeled "Red Hair," note how long it took for the first balloon to fall from the wall on your chart under Time 1 for the first time you did it.
  9. Repeat steps 5 and 6 two more times with the red-haired volunteer and the balloons marked "Red". Then, list the second time under Time 2 and the third under Time 3.
  10. Write down how long each balloon stayed stuck to the wall after each trial.
  11. Repeat steps 5 through 10 with the brown, blonde, and black-haired volunteers. Don't forget to write your times as soon as you finish each step.
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