PERMANENT AND INDUCED MAGNETS
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | All magnets have two poles-north (or north seeking) and south (or south seeking).
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| What do all magnets produce? | show 🗑
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| show | A region where other magnets or magnetic materials (e.g. iron, steel, nickel and cobalt) experience a force.
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| show | You can show a magnetic field by drawing magnetic field lines. The lines always go from north to south and they show which way a force would act on a north pole if it was put at that point in the field.
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| What does is mean when the lines are closer together when drawing magnetic field lines? | show 🗑
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| show | The further away from a magnet you get, the weaker the field is.
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| show | The magnetic field is strongest at the poles of a magnet.
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| show | This means that the magnetic forces are also strongest at the poles.
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| What is the force between a magnet and a magnetic material, no matter the pole? | show 🗑
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| show | If two poles of a magnet are put near each other, they will each exert a force on each other.
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| show | This force can be attractive or repulsive.
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| If two poles are the same - what will happen? | show 🗑
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| show | Two unlike poles will attract each other.
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| What do compasses show? | show 🗑
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| show | Inside a compass is a tiny bar magnet. The north pole
of this magnet is attracted to the south pole of any other magnet it is near.
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| show | So the compass points in the direction of the magnetic field it is in.
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| show | When they're not near a magnet, compasses always point north.
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| Why do compasses always point north? | show 🗑
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| show | There are two types of magnet-permanent magnets and induced magnets.
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| show | Permanent magnets produce their own magnetic field.
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| show | Induced magnets are magnetic materials that turn into a magnet when they're put into a magnetic field.
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| What is the force between permanent and induced magnets? | show 🗑
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| show | When you take away the magnetic field, induced magnets
quickly lose their magnetism (or most of it) and stop producing a magnetic field.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
HJB1972
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