Pre-Survey Electromagnetism

All objects contain electric charge.

• True

• False

Like charges attract each other.

• True

• False

A neutral object has no electric charges in it.

• True

• False

After being rubbed on a sweater, a balloon has a higher number of electrons than protons on its surface. What type of charge does the balloon have?

• A positive charge.
• A negative charge.
• A neutral charge.

• No charge.

When a negatively charged balloon is brought near a small piece of paper, the paper jumps toward the balloon. Why does this happen?

• The paper is now negative, so it moves closer.

• The paper turns positive by rubbing against the balloon.

• Charges inside the paper move around, pulling it toward the balloon.

• The balloon gives some charge to the paper, pulling it closer.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Describe what happens when you rub a balloon on your hair. Why does the balloon stick to the wall afterward?

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Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which material is most likely a conductor of electricity?

• A plastic spoon.

• A rubber band.

• A copper wire.

• A wooden stick.

What do you think makes a material a good conductor of electricity?

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Tags

NGSS.MS-PS2-3

Which of these is necessary for electric current to flow in a simple circuit?

• Plastic wires.

• A light bulb.

• A power source (like a battery) and a complete path.

• All three.

Magnets can attract all metals.

• True.

• False.