Application of Magnetism

What happens to the magnetic force as the distance between objects increases?

• It becomes stronger.

• It becomes weaker.

• It remains the same.

• It fluctuates randomly.

A moving charged particle automatically generates a ______.

• magnetic field

• gravitational field

• sound wave

• transverse wave

Why does a plastic ball not have a magnetic field?

• It is made of non-metallic material.

• It is too small to have a magnetic field.

• Its electrons' magnetic fields cancel each other out.

• It has no electrons.

What are ferromagnetic materials?

• Materials that repel magnets

• Materials that can be magnetized

• Materials that have no magnetic properties

• Materials that are always magnetic

What are domains in ferromagnetic materials?

• Regions with no magnetic fields

• Regions where electrons' magnetic fields line up

• Regions that repel magnetic fields

• Regions where atoms are randomly aligned

How can objects made from ferromagnetic materials be magnetized?

• By heating them

• By rubbing a magnet along them

• By exposing them to light

• By cooling them

What happens to a ferromagnetic object once it has been magnetized?

• It stays magnetic without another magnet nearby

• It loses its magnetism immediately

• It becomes non-magnetic

• It needs constant exposure to a magnetic field

What are the poles of a magnet called?

• Positive and Negative

• North and South

• Top and Bottom

• East and West

What happens if a magnet is cut into tiny pieces?

• Each piece will have only a North pole

• Each piece will have only a South pole

• Each piece will have both a North and a South pole

• Each piece will lose its magnetism

What do like poles of magnets do?

• Have no effect on each other

• Neutralize each other

• Repel each other

• Attract each other