Magnets

Multiple Choice

Which of the following best describes magnetism?

• A property that allows materials to give off an attractive or repulsive force

• A type of electricity

• A material that glows in the dark

• A property that only exists in liquids

Open Ended

Why is the ability to apply a force over a distance significant in the study of magnets?

Multiple Choice

Why can't magnetic poles be isolated, even if you cut a magnet in half?

• Because the poles are glued together

• Because each piece forms its own north and south pole

• Because the poles disappear when cut

• Because only one pole remains

Multiple Choice

Which of the following factors affect the strength of a magnetic field?

• The color of the magnet

• The material the magnet is made of

• The shape of the magnet

• The temperature of the room

Fill in the Blanks

Earth's core is made of various metals, that are oriented to act like a giant bar magnet in Earth. This is why we have North and South

.

Multiple Select

Which of the following statements about magnetic domains is/are correct? (hint: 3 answers are correct)

• In magnetic elements, domains are aligned to make a magnetic field.

• In nonmagnetic elements, domains are always aligned.

• All atoms have the potential to be magnetic due to electrons.

• Nonmagnetic elements show no apparent magnetism.

Multiple Choice

Which of the following best describes ferromagnetism?

• A phenomenon where objects placed in a strong magnetic field become magnetized due to the alignment of their atoms' poles.

• A phenomenon where objects repel each other due to magnetic fields.

• A process by which magnets lose their magnetism over time.

• A method of generating electricity using magnets.

Open Ended

Explain how electricity and magnetism are related based on the information provided.

Fill in the Blanks

When the switch is closed and current flows through the coil of wire around the nail, the nail becomes

.

Multiple Select

Select all the factors that can increase the strength of an electromagnet. (hint: 2 answers are correct)

• Increasing the number of loops of wire.

• Using a stronger battery to increase current.

• Using a non-metal core.

• Decreasing the current.

Open Ended

Compare and contrast the roles of electric motors and generators in the real world.

Fill in the Blanks

A device that uses an electromagnet to convert electrical energy into mechanical energy is called an

.

Open Ended

How do you think the property of magnetism can be useful in everyday life or technology?

Multiple Choice

What is the difference between magnetism and a magnet?

• Magnetism is a property, while a magnet is a material with that property.

• Magnetism is a type of metal, while a magnet is a force.

• Magnetism is visible, while a magnet is invisible.

• Magnetism is only found in nature, while magnets are man-made.