Magnets

Front

What happens when two magnets are brought close together with the same poles facing each other?

Back

They will repel each other.

Front

True or False: All metals are attracted to magnets.

Back

False

Front

What type of magnet is used in a crane that functions only when the electrical current is ON?

Back

Electromagnet

Front

Who discovered that you can create a temporary magnetic field by moving electric current through a wire?

Back

Hans Oersted

Front

What is the primary material that makes up the Earth's core, contributing to its magnetic properties?

Back

Iron

Front

What are the two types of magnetic poles?

Back

North and South poles.

Front

What is the principle behind the operation of an electromagnet?

Back

An electromagnet works by generating a magnetic field when an electric current flows through a coil of wire.

Front

What is the term for materials that are attracted to magnets?

Back

Ferromagnetic materials.

Front

What is the difference between permanent magnets and temporary magnets?

Back

Permanent magnets maintain their magnetism over time, while temporary magnets only exhibit magnetic properties when in a magnetic field.

Front

What is the role of magnetic field lines?

Back

Magnetic field lines represent the direction and strength of a magnetic field.