PHSICS MAGNETS

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What is Lodestone?
It is the first magnetic rock found.
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What is magnetite?
It is another word for lodestone
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Can it still be found?
yes
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What does ferromagnetic mean?
It means magnetic materials
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What are the 3 elememts?
Iron, cobalt and nickel
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What happens if a magnet is freely suspended?
it points towards the poles
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What do like poles do?
repel
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what do unlike poles do?
attract
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what is dipole?
it is an atom that acts like a magnet
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What is a domain?
it is a group of dipoles
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Can magnets get stronger if the domain is straight?
no
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what is that called?
a saturated magnet
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why is steel called a hard magnetic material
beacuse it is hard to make magnetic however it stays as a magnetic material forever
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why is iron called a soft magnetic material
because it is easy to get it magnetised however it comes of easily
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3 ways to destroy a magnet?
heat it, roughen it up or drop it on the floor
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What is a magnetic field?
it is where all the magnetism of the magnet is
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3 ways magnets are used?
pictures, car yard, motors, doors bvells
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when magnet is getting weak what is happening inside the magnet
the domains are getting rearranged therefore cancelling eachother making itb weaker and weaker
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where are the strongest places on a magnet?
the poles
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Other cards in this set

Card 2

Front

What is magnetite?

Back

It is another word for lodestone

Card 3

Front

Can it still be found?

Back

Preview of the front of card 3

Card 4

Front

What does ferromagnetic mean?

Back

Preview of the front of card 4

Card 5

Front

What are the 3 elememts?

Back

Preview of the front of card 5
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