Which of the following statements is true about Earth’s magnetic poles?

They are the areas where Earth’s magnetic field is strongest.

They are located at Earth’s geographic poles.

They are the areas where Earth’s magnetic field is weakest.

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

Add more coils of wire to the nail.

Reverse the poles of the magnet.

Remove all the coils and the nail.

What THREE ways are electromagnets different from permanent magnets?

they can increase in strength by increasing the current in the wire

they can change which is the north and south pole

How are electromagnets different from magnets?

you can turn an electromagnet on/off

magnets have a North and South pole

Which of the following is true about a bar magnet?

It is surrounded by a magnetic field.

Its magnetic field is strongest near its center.

The north pole is stronger than the south pole.

The south pole is stronger than the north pole.

How can levitating trains support the claim that magnetic fields exist between objects exerting magnetic force on each other even when there is no physical contact?

Levitating trains are controlled by the repulsion of two similar magnetic poles being brought close together.

Levitating trains are controlled by the attraction of two similar magnetic poles being brought close together.

Levitating trains are controlled by the attraction and connection of magnets on the train to magnets on the train tracks.

Levitating trains are controlled by the repulsion and connection of magnets on the train to the magnets on the train tracks.

A group of students was discussing whether the concept of magnetic fields is just a theory or if magnetic forces can be shown to exist between objects that are not touching. Some of the students were convinced that these forces only exist in theory while the rest of the students decided to prove that these forces actually exist. How can the students prove that magnetic forces exist between objects that are not touching each other?

Tape a bar magnet to the top of a toy car and use a second bar magnet to move the car without allowing it to touch the car.

Place two bar magnets on a table six inches apart with similar poles facing each other.

Place two bar magnets on a table six inches apart with opposite poles facing each other.

Use two magnets, one on the door and one on the door frame, to hold a cabinet door closed.

Magnetism

Authored by Horace Hines

Science

6th - 8th Grade

NGSS covered

Used 28+ times

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25 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Like poles of a magnet do what?

repel

attract

nothing

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What device makes a fan plugged into the wall spin?

generator

battery

electromagnet

electric motor

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a wire in a circuit wrapped around an iron core called?

electromagnet

generator

electric motor

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Unlike poles of a magnet do what?

repel

attract

nothing

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the force of attraction or repulsion of magnetic materials?

electricity

magnetism

energy

electromagnetism

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the region of force around a magnet known as?

magnetic field

magnetic pole

magnetic domain

lodestone

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An electromagnet can be found in all of the following except...

car

computer

home outlets

speaker

Tags

NGSS.MS-PS2-3

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Magnetism

Like poles of a magnet do what?

What device makes a fan plugged into the wall spin?

What is a wire in a circuit wrapped around an iron core called?

Unlike poles of a magnet do what?

What is the force of attraction or repulsion of magnetic materials?

What is the region of force around a magnet known as?

An electromagnet can be found in all of the following except...

These magnets will...

Which of the following statements is true about Earth’s magnetic poles?

A temporary magnet that only works when electricity is passed through wires surrounding an iron core is called:

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