Which of the following best describes the shape of magnetic field lines around a bar magnet?

Curved lines from north to south pole

If you sprinkle iron filings around a bar magnet, what will you observe?

The filings form a pattern showing magnetic field lines

The filings form a straight line

The filings arrange in a random pattern

Why does a compass needle point north?

It aligns with the Earth's magnetic field

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

Increasing the electric current

What is the main difference between a permanent magnet and an electromagnet?

Electromagnets need electricity to work

Permanent magnets need electricity to work

Permanent magnets are always made of copper

Why are magnetic field lines drawn from the north pole to the south pole outside a magnet?

This shows the direction a north pole would move

If you break a bar magnet in half, what happens to the pieces?

Each piece becomes a magnet with a north and south pole

Both pieces lose their magnetism

Why is steel used to make permanent magnets instead of pure iron?

Steel keeps its magnetism longer

A student wants to test which materials are magnetic. She has a piece of iron, a piece of copper, and a piece of plastic. She brings each close to a bar magnet. What should she observe and conclude?

Only the iron is attracted; iron is magnetic

All are attracted; all are magnetic

Only copper is attracted; copper is magnetic

None are attracted; none are magnetic

You are given a diagram of magnetic field lines around a bar magnet. How can you tell which end is the north pole?

The lines start from the north pole and end at the south pole

The lines are thicker at the north pole

The lines are broken at the north pole

The lines form circles at the north pole

A student notices that a compass needle points in a different direction near a strong magnet than it does far away from it. Explain why this happens.

The magnet creates its own magnetic field, affecting the compass

The air is thicker near the magnet

A student wraps a wire around a nail and connects it to a battery, creating an electromagnet. She notices it only picks up a few pins. What could she do to make it pick up more pins, and why?

Add more coils to increase the magnetic field strength

Use a wooden nail to make it lighter

Use less current to save energy

Explain why the Earth’s magnetic field is important for navigation.

It helps compasses point north, allowing people to find directions

It keeps the atmosphere in place

A student wants to test if a material is magnetic. Describe a simple experiment she could do.

Bring a magnet close to the material and see if it is attracted

Heat the material and see if it glows

Drop the material in water and see if it floats

Shine a light on the material and see if it reflects

A maglev train uses electromagnets to float above the tracks. Explain how this reduces friction and why it is useful.

No contact with the track means less friction, so the train can move faster and more efficiently

The train becomes heavier, so it moves slower

A student finds that a magnet can pick up some coins but not others. What could be the reason for this?

Only coins made of magnetic materials like iron or nickel are attracted to magnets

Explain why the magnetic field is strongest at the poles of a bar magnet.

The magnetic field lines are closest together at the poles, showing stronger forces

The poles are made of a different material

The middle of the magnet is hollow

Exploring Magnetism in Science

Authored by Alex McKay

Science

7th Grade

Used 6+ times

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30 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a type of permanent magnet?

Bar magnet

Electromagnet

Iron nail

Copper wire

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two main types of magnetic poles called?

Positive and Negative

North and South

Up and Down

East and West

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which material is NOT magnetic?

Iron

Nickel

Copper

Cobalt

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the region around a magnet where magnetic forces can be detected called?

Electric field

Magnetic field

Gravitational field

Sound field

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which device uses an electromagnet to function?

Compass

Electric bell

Bar magnet

Fridge magnet

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main component of the Earth's core that causes its magnetic field?

Aluminium

Iron

Lead

Silver

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a use of magnets in everyday life?

Cooking food

Sticking notes to a fridge

Growing plants

Making paper

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Exploring Magnetism in Science

Which of the following is a type of permanent magnet?

What are the two main types of magnetic poles called?

Which material is NOT magnetic?

What is the region around a magnet where magnetic forces can be detected called?

Which device uses an electromagnet to function?

What is the main component of the Earth's core that causes its magnetic field?

Which of the following is a use of magnets in everyday life?

Which of these is a temporary magnet?

What happens when you bring the north pole of one magnet close to the north pole of another magnet?

Which of the following best describes the shape of magnetic field lines around a bar magnet?

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