Electromagnets

How are you feeling today?

• Excellent

• Good

• Fine

• Not Great

• Pretty Bad

What type of energy does a battery store?

What is the compass aligned to initially? (when the wire is not connected to the battery)

• Earth's magnetic field

• The magnetic field of the battery

• The magnetic field of the wire

What happens when he connects the wire to the battery’s terminals?

• Nothing

• Electricity flows through the wire from one terminal to the other

• Electricity leaks from the battery

What happens to the compass when the wire is connected to the battery?

• Nothing happens to the compass

• The compass is repelled from the wire and it goes flying

• The compass starts to spin around endlessly

• The compass changes direction due to the magnetic field from the wire

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What generates a magnetic field?

• A moving electrical charge

• A piece of steel

• A cell phone

• A permanent magnet

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NGSS.MS-PS2-3

A magnet that gets its magnetism from flowing electrical current is called an electromagnet.

• True

• False

How can you make an electromagnet?

• Wrapping a large coil of wire around a permanent bar magnet

• Letting a wire stick to the side of a bar magnet

• Wrapping a large coil wire around a ferromagnetic material and connecting to a battery

How does he turn the electromagnet off?

• Touching the wire with his hands

• By disconnecting it from the battery

• By pulling the screw out of the coils of wire

• He used "the force"

You have now learned some of the basics of electromagnets. In the next video, you are going to learn how to make electromagnets stronger.

Are you ready to watch video 2? Do you feel like you understand everything from video 1?

• Yes!

• yea

• kinda

• not really but I will continue and review the first video later

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