Opposites Attract!

Which is not a force?

• Magnetism

• Friction

• Drag

• Neutrons

How can we easily define a 'force'

• Something Jedis use

• A push or pull

• Magic Balloons

• Atomic Mass

What happens to electrons when the balloon is rubbed against hair?

• • They disappear

• • They stay in the hair

• • They move from the balloon to the hair

• • They move from the hair to the balloon

What charge does the balloon get after being rubbed against hair?

• • No charge

• • Positive

• • Neutral

• • Negative

What causes the cereal to jump towards the balloon?

• • The balloon's negative charge attracting the cereal's protons

• • The balloon's positive charge repelling the cereal's electrons

• • The balloon's negative charge repelling the cereal's protons

• • The balloon's positive charge attracting the cereal's electrons

Why did the cereal fall back to the table after sticking to the balloon?

• • The cereal gained electrons and repelled the balloon

• • The balloon gained protons and repelled the cereal

• • The balloon lost its charge

• • The cereal lost its charge

What happens when opposite charges are near each other?

• • They repel each other

• • They attract each other

• • They turn into bananas.

• • They disappear

What happens when equal charges are near each other?

• • They disappear

• • They melt

• • They attract each other

• • They repel each other

Why did Ms. McNulty's hair try to come along with the balloon?

• • Because of the neutral charge

• • Because of the negative charge

• • Because of the friction

What does friction do to electrons in this demonstration?

• • It makes them positive

• • It causes them to move

• • It makes them neutral

• • It makes them disappear