STICKING A BALLOON TO A WALL
MATERIALS:
- balloon
- a piece of wool, nylon or fur
- wall
PROCESS:
Blow up the balloon and tie it.
Rub the balloon with your piece of wool, nylon or fur quickly.
Put the balloon against the wall and let go.
Watch what happens. It should stick to the wall.
EXPLANATION:
Why does this happen? When
you rub the balloon, you’re covering it with little negative charges. The
negative charges are attracted to the positive charges that are in the wall.
That’s why the balloon ‘sticks’ to the
wall.
