Unit #5 Review

This results from an interaction between electrically charged particles.

• electromagnetic force

• electromagnet

• attract

• repel

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

A temporary magnet with a magnetic field produced by electric current.

• electromagnet

• magnetic field

• current

• attract

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NGSS.MS-PS2-5

pull together

• attract

• repel

• current

• magnetic strength

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NGSS.MS-PS2-4

push away

• repel

• attract

• magnetic forces

• producer

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Students rubbed a balloon across a pillow to give it an electric charge. They found that the charged balloon could pick up pieces of paper. What data could the students collect to tell them if the electric charge on the balloon is getting stronger?

• The length and width of the balloon

• The number of pieces of paper picked up

• The size of the pillow

• The distance the balloon was rubbed,

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

This table shows the amount of staples picked up by an electromagnet with various amounts of coils wrapped around the nail. Based on the information in the table, what would most likely be the amount of staples picked up with 60 coils of wire wrapped around the nail?

• 71

• 48

• 62

• 57

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NGSS.MS-ETS1-3

This scrapyard electromagnet is able to lift heavy pieces of metal and move them from place to place. How is the metal able to release from the electromagnet and fall into the new location?

• A switch can shut off the current of electricity causing the magnetic field to stop, releasing the metal pieces.

• Static electricity is released causing the metal to fall downward.

• A stronger magnet below the metal attracts the pieces, removing them from the magnetic force above.

• The crane shakes the large metal pieces off as they fall in the proper place.

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NGSS.MS-PS2-5

NGSS.MS-PS2-1

The fact that the needle in a compass will point north supports the idea that?

• all metals are magnetic

• earth has a magnetic field

• opposite poles repel each other

• earth's gravitational pull keeps it in orbit around the sun

Two negatively-charged balloons are being moved closer together. Describe the force they exert on each other.

• Opposite charges attract each other

• like charges repulse each other.

• the force will pop them

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

This word means "pull together"

• attract

• repel

• neutral

• current

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NGSS.MS-PS2-4