Magnets and Electromagnets

A material that exerts force on others of its kind and attracts iron is ___

• ferromagnetic material

• magnet

• motor

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Where on a magnet is the magnetic field the strongest?

• Both magnetic poles

• Center of the magnet

• Magnetic north pole

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NGSS.MS-PS2-3

Which statement is true?

• Two north poles attract each other.

• Two south poles attract each other.

• A north pole and a south pole will repel each other.

• A north pole and a south pole will attract each other.

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NGSS.MS-PS2-3

Which statement below best describes these pictures?

• Only A is a magnet

• Only C is a magnet

• Both A and B are magnets

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Which best describes a nonmagnetic material?

• The magnetic poles of the atoms point in different directions.

• The magnetic poles of the atoms point in the same direction.

• The magnetic poles of its atoms are grouped in domains that point in different directions.

Which best describes the ferromagnetic material?

• The magnetic poles of the atoms point in different directions.

• The magnetic poles of its atoms point in the same direction.

• The magnetic poles of its atoms are grouped in domains that point in different directions.

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NGSS.MS-PS2-3

Which of these bests describes an electromagnet?

• A permanent magnet made from electric currents.

• A temporary magnet made from electric currents.

• A temporary magnet made from magnetic currents.

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Which of the following will increase the strength of an electromagnet?

• Increase the voltage of the battery

• Decrease the voltage of the battery

• Wrap the coils around the core less times

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NGSS.MS-PS2-3

Which part of the picture is the has the magnetism of the electromagnet?

• Commutator

• Battery

• Coil

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NGSS.MS-PS2-3

Why would a compass needle move if held near a current-carrying wire?

• A current carrying wire will cause any object to move

• A compass will point to any kind of metal

• Both the compass needle and the current carrying wire have magnetic fields

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5