MagnetsMagnetsWhat do we already What do we already

know?know?

What are we going to learn today?What are we going to learn today?

What the characteristics of magnets areWhat the characteristics of magnets are That magnets can repel and attract each That magnets can repel and attract each

otherother How magnets behaveHow magnets behave What happens when you put two magnets What happens when you put two magnets

togethertogether

What are the characteristics of What are the characteristics of magnets?magnets?

They can attract some materialsThey can attract some materials They can also repel other magnetsThey can also repel other magnets They are usually made of ironThey are usually made of iron They have two ends called magnetic They have two ends called magnetic

polespoles

What do all these new words What do all these new words actually mean?actually mean?

MagnetMagnetA stone or a piece of metal that attracts some A stone or a piece of metal that attracts some

other metal.other metal. AttractAttractTo pull towards each other.To pull towards each other. RepelRepelTo push away from each other.To push away from each other. PolesPolesThe ends of a magnet.The ends of a magnet.

What do the poles do?What do the poles do?When a magnet is held from a string:When a magnet is held from a string: The north pole points northThe north pole points north The south pole points… can you The south pole points… can you

guess?guess?How do we know this?How do we know this?We can measure it with a compass!We can measure it with a compass!

On school magnets, the On school magnets, the REDRED pole is the pole is the north pole and the north pole and the BLUEBLUE pole is the pole is the south.south.

But what happens if you put two But what happens if you put two magnets together?magnets together?

Talk to your partner- what do you think?Talk to your partner- what do you think?

So let’s try it. So let’s try it. First of all, First of all, northnorth to to southsouth……southsouth to to northnorth……northnorth to to northnorth……southsouth to to southsouth……

What did we find out?What did we find out?

So now we know that “like” poles repel each So now we know that “like” poles repel each other…other…

and that “opposite” poles attract each other.and that “opposite” poles attract each other.

They do this because there is a FORCE between them.