"Magnetic Interactions". What is magnetism?. By: Dana A, Robin B. & Tatyana P. Are these items magnetic or not? Out of the few items below, can you place the items in the correct box . . Magnetic. Nonmagnetic.
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What is magnetism?
By: Dana A, Robin B. & Tatyana P.
Out of the few items below, can you place the items in the correct box.
At the end of the slide show, you will understand why some items are magnetic and are non-magnetic.
Doughnut or ring magnet
Pull towards object
Pushes away object
*Items that contain metals such as iron, cobalt, steel and nickel are magnetic and are therefore, attracted to magnets.
Which breakfast food do you think contains the most iron?
b. Waffles and syrup
c. Total breakfast cereal with milk
-Many breakfast Cereals contain iron which means that it is magnetic.
-Try the experiment on the next page to see which of your favorite cereal contain iron.
1.Place the magnet in the bowl.2. Pour 1 cup iron-fortified cereal, such as "Total," into the mixing bowl.3.Add 2 cups of hot water.4. Stir the water and cereal for at least ten minutes. (Thirty minutes will give the maximum iron recovery.)5. Carefully take the magnet out of the bowl.
6. The black residue left on the white magnet is iron.
-1 Cup iron-fortified cereal (Total)
-2 Cups hot water-Deep mixing bowl or glass-Spoon-White Magnet (or painted white)
-A magnet that is free to swing around. It always point to the magnetic poles.
-A device used to determine geographic direction (such as North, South, East and West) usually consisting of a magnetic needle.
-Many years ago, sailors used a compass to find their way at sea, today many people use navigation systems to help find their way..
-The lines of force surrounding a permanent magnet or a moving charged particle. These lines of force are invisible.
Do the lines of force look the same? What’s different about them?
Earth’s magnetic field
-No, some magnets are stronger than others.
-A horseshoe magnet may be the strongest out of the three magnet above because the poles of the magnets are close together.
-When the poles of the magnets are close together, it makes the magnet more powerful than if they were farther apart.
Is the object still magnetic?
Paper clip with a sheet of paper over it
Paper clip in a half jar of water
Floppy disks are made of plastic and coated in magnetic particles. Floppy disks are used to save and retrieve information.
The edge of the refrigerator door is lined with a magnet. It holds the door to the metal frame.
Compasses help people use the earths magnetic force to find their way.
Doorbells use magnets too. The magnet pulls the hammer forward to strike the bell. Ding dong!
Credit cards. The thin, black bar on the back is coated with tiny magnets. It holds information.
There are tiny magnets inside a stereo, telephone, vacuum cleaner and washing machine.
Explore the Filamentality Website to learn more about magnetism.