Magnetism and Its Applications

What happens when you cut a magnet in half?

• It stops working.

• It becomes a single pole magnet.

• It becomes two smaller magnets, each with a north and south pole.

• It loses its magnetic properties.

Why does a compass needle point north?

• Because it is attracted to the sun.

• Because it is attracted to the Earth's magnetic south pole.

• Because it is attracted to the Earth's magnetic north pole.

• Because it is attracted to the moon.

What is an electromagnet?

• A magnet that only works in water.

• A natural magnet found in rocks.

• A magnet that can be turned on and off with electricity.

• A magnet that is always on.

Which metals are attracted to magnets?

• Iron, nickel, and cobalt.

• Platinum, zinc, and brass.

• Gold, silver, and copper.

• Aluminum, tin, and lead.

How did ancient Chinese people use magnets?

• To create electricity.

• To build houses.

• To make jewelry.

• To create the first compass using lodestone.