Why do magnets repel and attract?
Magnets are surrounded by an invisible magnetic field that is made by the movement of electrons, the subatomic particles that circle the nucleus of an atom. … Magnets attract when a north pole is introduced to a south pole. If like poles are introduced, either north to north or south to south, the magnets repel.
Why do magnets attract ks2?
An explanation of how magnets work by using their poles to either attract or repel objects. Only metals which contain iron, nickel or cobalt are magnetic. The two poles which are the same will repel each other, and the two poles which are different will attract each other. There are magnets all around us.
Why do magnets attract and repel ks3?
If you bring two bar magnets together, there are two things that can happen, attraction and repulsion : if you bring a north pole and a south pole together, they attract and the magnets stick together. if you bring two north poles together, or two south poles together, they repel and the magnets push each other away.
How do you explain magnetic force to a child?
A magnet is a rock or a piece of metal that can pull certain types of metal toward itself. The force of magnets, called magnetism, is a basic force of nature, like electricity and gravity. Magnetism works over a distance. This means that a magnet does not have to be touching an object to pull it.
Why do we need magnets for kids?
Perhaps the most important feature of the Earth’s magnetic field is that it protects us from the Sun’s solar wind and radiation. Magnets can also be created by using electricity. By wrapping a wire around an iron bar and running current through the wire, very strong magnets can be created.
Why does the Earth have a magnetic field ks3?
The outer core of the Earth contains a lot of iron in a molten state. As the Earth spins this molten iron moves and creates the Earth’s magnetic field . The Earth behaves as if there is a huge bar magnet at its centre.
When a magnet and a magnetic material are brought together what do they do?
When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract. Since a free hanging magnet will always face north, magnets have long been used for finding direction.