Why do certain materials attract or repel?

Why do certain materials attract or repel?

In this enquiry we will be learning all about how things move on different surfaces, forces linked to materials and  magnets. Use the information and links below to help during our enquiry.

 

 

 

 

 

Magnets have north poles and south poles. These attract each other. But two north poles will repel each other, as will two south poles. Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Most other metals, like aluminium, copper or gold, are not magnetic.

 

Magnetic poles

When two magnets are close, they create pushing or pulling forces on one another. These forces are strongest at the ends of the magnets. The two ends of a magnet are known as the north pole and the south pole.

Same poles repel

If you try to put two magnets together with the same poles pointing towards one another, the magnets will push away from each other. We say they repel each other. In this picture two north poles are pushing away from each other (repelling each other).

Different poles attract

If you put two magnets together with different poles pointing towards one another, the magnets will pull towards each other. We say they attract each other. In this picture a north and a south pole are pulling towards each other (attracting each other).

Some magnets are stronger than others. Strong magnets will create bigger pushing or pulling forces than weak magnets.

Magnetic materials

Magnets can attract other magnets but they can also attract magnetic materials. Magnetic materials are always metals but only a few metals are magnetic. Iron IS magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel paperclip, for example, will be attracted to a magnet. Most other metals, for example aluminium, copper and gold, are NOT magnetic. An aluminium drinks can, for example, will not be attracted to a magnet.

Magnetic objects: paperclip, screwdriver and key

Not magnetic object: a plastic toy, a ceramic mug and a soda can

Play the BBC Magnets game by clicking the picture below

magnet game

 

 

 

 

15 Comments

  1. To miss McGrath I love this page because I love learning.

  2. I enjoyed today’s task because it was really fun.

  3. I included pictures,facts and photos.

  4. I have learnt that the higher you get,the less oxygen there is to breathe in and out.I have also learnt that attract means stick together

  5. ON MY TITLE PAGE I HAVE DRAWN PICTURES AND I HAVE DONE SOME WRITING AND I COLOURED IT IN

  6. I have learnt that there is no gravity in space so you can’t breath and you bounce all around the place.

  7. I like this website because it full of interesting facts

  8. I like doing foces

  9. I have leant that repel means it cant be attached and attract means it will attach together.

  10. I included a sentence about repel, friction, attract and gravity.

  11. I have put on my title page pictures. The pictures were a person pushing a car and a person pulling a truck.

  12. Miss McGrath

    What did you include on your forces title page today?

  13. Miss McGrath

    This sounds interesting 3SG, I look forward to hearing about what you already know about magnetic materials tomorrow in science when we create our title pages

  14. To miss McGrath I like this page because I know a lot about magnetic materials.

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