U5 Day 9 Warm up - Magnetism

Front

What do the lines around a magnet represent?

Back

Magnetic Field: The lines represent the magnetic field, which shows the direction and strength of the magnetic force around the magnet.

Front

How can the poles of an electromagnet be reversed?

Back

By changing the direction of current flow: Reversing the current in the coil will switch the poles of the electromagnet.

Front

Where is the strongest part of a magnet located?

Back

The poles: The magnetic poles (North and South) are where the magnetic force is strongest.

Front

What direction does the North Pole of an electromagnet point?

Back

It points towards the Earth's magnetic North, which is generally to the left when viewed from the perspective of the electromagnet.

Front

What happens if you cut a magnet in half?

Back

Both halves get a North pole and a South pole: Each piece becomes a smaller magnet with its own North and South poles.

Front

What is a magnet?

Back

A magnet is an object that produces a magnetic field, attracting materials like iron, nickel, and cobalt.

Front

What are the two types of magnets?

Back

Permanent magnets and electromagnets: Permanent magnets maintain their magnetic properties, while electromagnets require an electric current.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Front

What is magnetic declination?

Back

Magnetic declination is the angle between magnetic north (the direction a compass points) and true north (geographic north).

Front

What materials can be used to make an electromagnet?

Back

Materials like iron, cobalt, and nickel are commonly used to create electromagnets due to their ferromagnetic properties.