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What is a magnet?. Any object with magnetic force. Magnetic Poles. The parts of a magnet where the magnetic force is strongestAll magnets have two poles- a north and a south poleWhen two magnets come together, a north and south pole attract each otherLike" poles (north-north or south-south) repe
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1. Magnetism 4th grade Science
2. What is a magnet? Any object with magnetic force
3. Magnetic Poles The parts of a magnet where the magnetic force is strongest
All magnets have two poles- a north and a south pole
When two magnets come together, a north and south pole attract each other
“Like” poles (north-north or south-south) repel each other
4. Magnetic Force The force that pushes magnets apart or pulls them together Magnets that are far apart do not push or pull enough to move each other.
The magnetic force between two magnets is weak when magnets are far apart.
The magnetic force gets stronger as the magnets are brought closer together.
5. What kinds of materials are attracted to magnets? What kinds of materials are not attracted to magnets? Let’s see...Conduct Investigation!
6. Magnetic Field The area of magnetic force around a magnet This is how a magnet can attract or repel objects without touching them.
Every magnet has a magnetic field around it.
The magnetic field is strongest near the magnet’s poles. The magnetic field is weakest farther away from the poles.
7. Did you know? Our planet is a giant magnet. Much of the Earth is made of iron which creates a magnetic field that surround Earth.
Long ago people noticed one end of a magnet pointed north so they called it the “north-seeking end”. The same happened with the “south-seeking end”. It was shortened to north and south poles of a magnet.
8. Drawing Conclusions Investigation
