Exploring Magnets Chapter 4 Quiz - MCQGeeks.com

What is the purpose of the activity with the steel balls in a maze?

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To test speed
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To demonstrate attraction
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To measure distance
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To create art

What is the main characteristic of a magnet?

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It can float
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It can disappear
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It has poles
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It can change shape

What is the effect of heating a magnet?

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It strengthens the magnet
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It weakens the magnet
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It makes it float
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It changes its color

What is the purpose of the activity with the steel paper clip in water?

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To test buoyancy
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To demonstrate magnetism
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To measure weight
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To create art

What is the result of placing a magnet near a piece of iron?

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It attracts the iron
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It breaks the iron
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It repels the iron
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It has no effect

What is the main use of magnets in medicine?

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To perform MRI scans
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To cook food
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To create art
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To measure temperature

What is the effect of using a magnet with a piece of cardboard?

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It increases attraction
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It decreases attraction
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It breaks the magnet
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It has no effect

What is the purpose of the activity with the bar magnet and U-clips?

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To create art
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To measure weight
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To observe attraction
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To test strength

What is the main characteristic of a freely suspended magnet?

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It can float
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It can disappear
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It can change shape
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It always points north-south

What is the purpose of the activity with the iron needle and cork?

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To test strength
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To create a compass
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To measure weight
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To create art

What is the significance of the North pole of a magnet?

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It attracts all materials
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It points to the North direction
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It is the strongest part
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It is the heaviest part

What happens when you bring two magnets with unlike poles together?

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They attract
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They repel
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They stick together
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They break

What is the purpose of the activity with the compass needle and bar magnet?

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To measure weight
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To observe deflection
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To create art
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To test strength

What is the main function of a bar magnet?

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To attract metals
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To calculate speed
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To measure temperature
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To weigh objects

What is the effect of placing a piece of glass between a magnet and a compass needle?

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It breaks the magnet
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It increases attraction
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It has no effect
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It decreases attraction

What is the purpose of the activity with the steel balls and cardboard?

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To test speed
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To create art
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To demonstrate attraction
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To measure distance

What is the main characteristic of a magnetic material?

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It can disappear
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It can change shape
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It can float
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It is attracted to magnets

What is the purpose of the activity with the bar magnet and iron filings?

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To measure weight
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To create art
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To observe magnetic fields
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To test strength

What is the significance of the South pole of a magnet?

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It is the strongest part
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It points to the South direction
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It attracts all materials
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It is the heaviest part

What is the main use of magnets in navigation?

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To measure temperature
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To create art
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To find directions
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To cook food

What is the effect of using different shapes of magnets?

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It has no effect
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It makes the magnet stronger
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It affects the attraction
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It changes the magnet's color

If magnetic north pole of a magnet is brought near the north pole of another magnet, then they will ________.

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push away
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pull together
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attract and contract
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repel

Where was magnets first discovered?

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Asia minor
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Asia major
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Magnes
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Maldives

Are magnets used in computers?(While making)

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Yes, as in ceramic magnets are used.
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No, they destroy computers.
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Yes, because they make computers magical.
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I don't know. Ask a physicist.

In olden days, sailors used to find direction by suspending a piece of ____________.

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Magnetite
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Ceramic magnet
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Handkerchief
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Putting one's hand in water and check currents

Magnetic field lines are closed, straight curves. True or False:

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True
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False
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I don't know.

Which of the following substances is used to make electromagnets?

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Soft iron
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Steel
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Both (a) and (b)
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None of the above.

_______ can be used to prevent self-demagnetization in case of horse-shoe magnets.

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Soft iron
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Cobalt
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Wood
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Steel

The _____________ property of a magnet is used in magnetic compass.

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directive
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repulsion
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significative
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happy

Where does Reshma live?

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In a coastal town of Kerala
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In a mountain village of Tamil Nadu
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In a desert town of Rajasthan
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In a city in Maharashtra

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