Braddy connected the loose wire to the battery and created an electromagnet. He picked up 45 thumb tacks with his electromagnet, though his goal was to pick up 50 thumb tacks. What could Braddy do to increase the strength of his electromagnet and pick up more thumbtacks?

Use two batteries instead of one.

Replace the nail with a piece of steel.

How is an electromagnet different from a bar magnet?

An electromagnet is temporary and is magnetic when a current flows through a wire wrapped around the core.

Only a bar magnet has a magnetic field.

Only an electromagnet attracts materials made of iron.

A bar magnet is a temporary and is only magnetic when a current flows through a wire wrapped around the core.

Michael is playing with two horseshoe magnets. He is trying to get them to touch, but they will not regardless of how hard he tries. Why will the magnets not come in contact?

Michael is trying to touch north poles to north poles.

Magnets always repel other magnets.

Magnets always attract other magnets.

Michael is trying to touch north poles to south poles.

You need to separate a mixture of iron filings, sand, and salt. Which of the three would be easiest to separate first and what method would be best?

The iron filings would be easiest to separate, and using a magnet would be the best method.

The salt would be easiest to separate, and using a magnet would be the best method.

The salt would be easiest to separate, and using hot water to dissolve the other substances would be the best method.

The sand would be easiest to separate, and using hot water to dissolve the other substances would be the best method.

The attracting and repelling forces of magnets are used in countless objects, from refrigerator doors to maglev trains. Refrigerator doors use the attraction of magnets to stay closed, while maglev trains use magnetic repulsion to hover above rails. The center magnet in the picture is hovering between two magnets, making it appear to float. Which best explains how the center magnet is able to hover between two other magnets?

The magnets are stacked so that similar poles are facing one another.

The opposite poles of each magnet are facing each other, so they repel.

The middle magnet is repelling the top magnet while attracting the bottom.

The middle magnet is attracted to the top magnet, but held down by gravity.

Which statement about magnets is correct?

Like poles of magnets repel each other.

Like poles of magnets attract each other.

Opposite poles of magnets repel each other.

Magnets of the same size attract each other.

Jim and Jane brought magnets to science class to experiment with. They want to test objects in the class to see if they will be attracted to the magnet. They tested a paper clip, an eraser, a piece of chalk, and their textbook. The results of the test should show that ...

The magnet attracts the paper clip.

The magnet attracts the eraser.

The magnet attracts the textbook.

The magnet attracts the piece of chalk.

Which statement BEST describes the causes of Motion 1 and Motion 2 shown in the image?

Magnetism caused Motion 1, and gravity caused Motion 2.

Gravity caused Motion 1, and magnetism caused Motion 2.

Electricity caused Motion 1, and gravity caused Motion 2.

Electricity caused Motion 1, and magnetism caused Motion 2.

In which of these activities will a simple magnet, like the one shown above, MOST LIKELY be used?

find solid gold coins at the beach

Jake has four pairs of horseshoe magnets in different sizes. He experiments by moving each pair farther and farther apart. Which pair of magnets will attract each other at the farthest distance?

the third largest pair of magnets

the magnets all have the same amount of attraction

Magnets

Quiz

•

Science

•

5th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS2-3, MS-PS2-5, 3-PS2-3

+1

Standards-aligned

James Powell

Used 129+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a homemade electromagnet, what must you do to increase the number of paper clips their electromagnet picks up?

make the wire longer

remove the nail from the center of the wire

increase the number of loops of wire around the nail

spread the loops of wire apart on the nail so they do not touch

Tags

NGSS.MS-PS2-3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails?

iron nail

water

wooden stake

plastic spoon

Tags

NGSS.MS-PS2-3

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to ...

a piece of metal.

positively charged hair.

the neutrally charged wall.

another negatively charged balloon.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which set of magnets correctly illustrates the attraction of unlike poles?

A

B

C

D

Tags

NGSS.MS-PS2-3

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This force is a pull between all objects. It is the force that gives us weight here on Earth. And, if we throw a rock off of a cliff, it is the force that causes the rock to fall to Earth. What is this force?

Gravity

friction

resistance

magnetism

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which electromagnet would have the most strength?

An electromagnet with 5 coils.

An electromagnet with 10 coils.

An electromagnet with 15 coils.

An electromagnet with 20 coils.

Tags

NGSS.MS-PS2-3

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which change would result in a stronger electromagnet?

Reducing the number of batteries

Increasing the voltage of the battery

Substituting another metal for the iron core

Decreasing the number of coils around the iron core.

Tags

NGSS.MS-PS2-3

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20 questions

In a homemade electromagnet, what must you do to increase the number of paper clips their electromagnet picks up?

Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails?

You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to ...

Which set of magnets correctly illustrates the attraction of unlike poles?

This force is a pull between all objects. It is the force that gives us weight here on Earth. And, if we throw a rock off of a cliff, it is the force that causes the rock to fall to Earth. What is this force?

Which electromagnet would have the most strength?

Which change would result in a stronger electromagnet?

Which set of magnets correctly illustrates the repulsion of like poles?

Braddy connected the loose wire to the battery and created an electromagnet. He picked up 45 thumb tacks with his electromagnet, though his goal was to pick up 50 thumb tacks. What could Braddy do to increase the strength of his electromagnet and pick up more thumbtacks?

How is an electromagnet different from a bar magnet?

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