What are the two types of magnets?

Magnets are objects that attract other objects made of certain materials. They have two poles, called the north pole and the south pole. Opposite poles attract each other, while like poles repel each other.

There are two main types of magnets: permanent magnets and electromagnets.

Permanent magnets are made of materials that are naturally magnetic, such as iron, nickel, and cobalt. These magnets keep their magnetism even when they are not near other magnets. Some examples of permanent magnets are refrigerator magnets and compasses.

• The refrigerator magnets that is used to hold up pictures and notes.
• The compass that is used to find directions.

Electromagnets are made of a coil of wire that is wrapped around a metal core. When an electric current is passed through the wire, the core becomes magnetized. Electromagnets lose their magnetism when the electric current is turned off. Some examples of electromagnets are electric motors, generators, and MRI machines.

• The electric motors that power toys.
• The generators that power homes.
• The MRI machines that doctors use to take pictures of bodies.

Magnets are amazing objects that we use in many different ways. They can be used to hold things together, to generate electricity, and to create magnetic fields. We are still learning about how magnets work, but they are a fascinating part of our world.

What are some objects that are not magnetic?

Not all objects are attracted to magnets. Some objects that are not magnetic include wood, plastic, glass, and paper. For example, if you try to stick a magnet to a wooden table or plastic toy, it won't stick because these materials are not magnetic.

What are the poles of a magnet?

The poles of a magnet are the two ends where the magnetic force is the strongest. There is a north pole and a south pole. Just like the Earth has a North Pole and a South Pole, magnets have these two poles too. When you hold a magnet, the pole that points towards the North Pole of the Earth is called the north pole of the magnet, and the other end is the south pole of the magnet.