Magnets and electricity

What is magnetic force?

• a force exerted by a magnet only when it physically touches an object

• a force exerted by magnets that can be felt by objects around or near a magnet.

• a force exerted by electrically charged particles

• a force exerted by magnets that makes an object become electrically charged

Tags

NGSS.MS-PS2-3

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What is a magnet?

• an object that produces magnetic force

• an object that causes objects to become positively charged

• an object that causes objects to become negatively charged

• an object that attracts nonmetallic objects towards it

Tags

NGSS.MS-PS2-3

True or False: All objects made of iron, nickel or cobalt are magnets.

• true

• false

Tags

NGSS.MS-PS2-3

Complete the statement. The north pole of one magnet is _________ the south pole of a second magnet.

• attracted to

• repelled by

• attracted to or repelled by

• neither attracted to or repelled by

Tags

NGSS.3-PS2-3

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What is magnetic material?

• a material that produces a magnetic force

• a material that is attracted to or repelled by a magnet

• a material that becomes positively charged when a magnet is brought near it

• a material that becomes negatively charged when a magnet is brought near it

How can you demagnetize a magnet?

• by running a permanent magnet over it in different directions

• by running a permanent magnet over it in the same direction

• by heating, hammering or dropping it

• by freezing it

What happens to the strength of magnetic field as you move away from the magnet?

• the strength of the magnetic field increases

• the strength of the magnetic field deceases

• the strength of the magnetic field doesn't change

Tags

NGSS.MS-PS2-3

What is responsible for creating a magnetic field around Earth?

• Earth's atmosphere

• Earth's crust

• Earth's mantle

• Earth's iron core

Where is Earth's magnetic South Pole located in relation to Earth's geographic South Pole?

• Earth's magnetic South pole is located directly at Earth's geographic South pole

• Earth's magnetic South pole is located ~10 from Earth's geographic South pole

• Earth's magnetic South pole is located directly at Earth's geographic North Pole

• Earth's magnetic South pole is located ~10 from Earth's geographic North pole

What type of particle exerts an electric force?

• a positive charged particle

• a negatively charged particle

• a neutral particle

• both a positive and negatively charged particles