Science quiz

Magnetism

Magnetism

A physical phenomenon caused by moving electric charges that results in attraction or repulsion between objects.

Non-Contact Force

A force that acts on an object without physical contact.

Magnet

An object that produces a magnetic field and can attract certain materials like iron.

Repel

To push objects away from each other due to a force.

Attract

To pull objects toward each other due to a force.

Iron Filings

Small pieces of iron used to show the pattern of a magnetic field.

Magnetic Field

the region around a magnet where magnetic forces can be detected.

Magnetic Field Lines

Imaginary lines that show the direction and strength of a magnetic field.

Compass

A device that uses a magnetized needle to show direction using Earth’s magnetic field.

Dipolar

Having two opposite magnetic poles, north and south.

Earth’s Poles

The two regions where Earth’s magnetic field is strongest, called the north and south magnetic poles.

Magnetosphere

The region around Earth where its magnetic field protects the planet from solar wind

Electromagnet

A magnet produced by an electric current flowing through a wire, usually wrapped around iron.

Electric Current

The flow of electric charge through a conductor.

Attract is the ….

Pulling force

repel is the…

pushing force

All magnets are dipolar. They have a north and south magnetic pole.

true

What would a compass needle do next to a south facing magnet? 

Red needle points to the south pole

What would a compass needle do next to a north facing magnet? 

Red needle points away from the north pole aligning with the magnetic field

How is the Earth like a magnet?

Earth has a magnetic field created by its iron core, acting like a giant bar magnet with north and south poles that guide compasses, protect us from the Sun, and help animals navigate.

How would you describe the shape of the magnetic field around the magnet?

Continuous, closed loops that emerge from the north pole, curve outwards and around to the south pole.