An electromagnet is a strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the wire.
1. Go to: How Stuff Works
Study the content on the page and answer the following questions.
What is the basic idea behind an electromagnet?
What sort of things can you create with electromagnets?
2. Click Here , for the next page and answer the following questions.
What is the fundamental law of all magnets?
Compare and contrast a normal magnet and an electromagnet.
3. Click Here for the next page and answer the following questions.
An electromagnet starts with a _________________ (or some other
source of power) and a wire. What a battery produces is
Explain how an electron flows in an electromagnet.
What is the basis of an electromagnet?
4. Click Here for the next page and answer the following question.
Explain why the compass needle swings away from the north when placed near an electromagnet. What is affecting the compass?
Click Here for the next page and answer the following question.
Hypothesize how you can increase the magnetic field of an electromagnet. Explain why this method works.
5. Go to: Fossweb
Follow the links for electricity and magnetism until you get to the electromagnet game.
Read the instructions then start the game!
Fill in the following blanks with the values that enabled your magnet to lift all 75 shavings.
Wire Gauge___________ Wire Type___________ #of Winds_________
Power Supply: AC or DC #of Volts ___________
On a separate sheet of paper, invent a device that would make life easier and uses at least one electromagnet. Please include a labeled diagram and an explanation of your device.
Just for Fun!
Magnetism Flash Game