Magnetic Reading

Fun with Magnets

By Hamad Faisal

A magnet is a metal which attracts or repels other materials.​ Magnets have two poles, north and south. Magnets have an invisible magnetic field that allows them to attract or repel certain materials.

​About magnets

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Open Ended

Can you name some material that are attracted or repelled by magnets?

According to Greek legend, magnetism was first discovered by a shepherd named Megnes, who lived in Megnesia, Greece. Megnes was herding his sheep through the mountains.

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​Discovery of Magnets

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Multiple Choice

Who Discovered Magnets?

• Magnus

• Magnecia

• Magman

• Morgan

Multiple Choice

Where Did he live?

• Megnesia, Greece

• Megnesia, Greenland

• Magneia, Greekland

Draw

draw the staff of Magnus on a big magnetic rock.

Permanent magnets are perhaps the most common type they are used to manufacture refrigerator magnets, as well as in jewelry making.

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Most common type of Magnet?

Temporary magnets can be useful in applications that generate a temporary magnetic field and require a magnetic response for the duration of the field.

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Temporary Magnets

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Fill in the Blanks

What is the most common type of Magnet.

Magnetization​

​Magnetization is the process of turning a magnetic material into a temporary magnet.

Take a magnetic metal object and rub a strong magnet on it by placing the magnet on one end and pulling it towards the other end. these steps should be repeated at lest 70 to 80 times.​

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​Single touch method

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Electromagnets can be created by wrapping a wire around an iron nail and running current through the wire. The electric field in the wire coil creates a magnetic field around the nail.

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​Electromagnet

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Multiple Choice

one method of magnetization?

• scratching the magnet

• Single touch method

• breaking the magnet

• throwing the magnet down

Demagnetization of Magnet

​Demagnetization is to lose magnetic properties or remove magnetic properties from a magnet.

ways to demagnetize Magnets:

rough handling.

hammering the magnet.

passing an alternating current around the magnet.

dropping the magnet on the floor.

heating the magnet to a very high temperature.

Draw

draw a way to demagnetize a magnet.

Draw

Draw a way to magnetize a Magnet.

Draw

draw some magnetic keepers

Poll

was the presentation good

• yes

• Amazing

• good

• bad

​The End

Thank You