Dimdima

Online Children's Magazine from India

### Hands On

Warning: Please get the help of some elders to do this experiment.
Things Required
1. A Magnet
2. A needle
3. A thin wire
4. A candle

Step:1
Tie the needle with the thin wire and hang it.
Step:2
Bring the magnet a little closer. The needle will get attracted towards the magnet.
Step:3
Heat the needle with the candle.

The teacher Said

"As the needle gets heated, it gets detached from the magnet".

Step:4
I tried it at home and heated the needle for ten minutes. But the needle did not get detached from the magnet.

The teacher Said

"since the heat was spreading to the magnet, the needle was not getting heated."

Step:5
I pulled the thread backwards and got the needle detached from the magnet. the needle is still under its magnetic field.
I continued heating...

What I observed...
Even then nothing happened. The needle did not move away from its magnetic field.

The teacher Said

"The heat was not enough."

You May Try and Share It With Us.
May be the teacher is right,"The heat was not enough."
I do not know.

#### EXPLANATION GIVEN BY OTHERS

chitrakala

The magnetized needle just behaves like a magnet and develops north pole and south pole. When allowed to float on water the north pole seeks north and south pole seeks south which is true for all magnets. This is the reason why the magnetized needle always comes to rest only in one direction.

Akshay Jain

When any metal is magnetised, it goes towards north.

umesh

Repeatedly rubbing the magnet on iron rod, its molecules are arranged due to magnetic effects in a particular direction.

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Dimdima is the Sanskrit word for ‘drumbeat’. In olden days, victory in battle was heralded by the beat of drums or any important news to be conveyed to the people used to be accompanied with drumbeats.

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email : editor@dimdima.com

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