Have you ever wondered what everything in the world is made from? The answer is matter.Matter is anything that takes up space and has mass.There are millions of different things in the world, but there are just three different forms of…
What are Tires Made out of? Think of all the different things that can be made from rubber.There are gloves, rubber bands, boots and shoes, fan belts for cars, inflatable boats, bottle stoppers, balls, tires, and foam mattresses.The rubber used…
Like many metals, aluminum is a very useful element.It is found in rock as bauxite, which is an aluminum ore containing oxygen.The oxygen has to be removed before the aluminum can be used.the oxygen and the aluminum are joined so…
What is Electroplating? If you pass electricity through a solution, you can cause a chemical reaction. New substances are produced where the electric current enters and leaves the solution—at the electrodes. Electricity can also change the electrodes themselves. Here is…
Part of an electromagnet is called a solenoid. A solenoid is a coil of wire that has an electric current flowing through it. When an electric current flows through a wire, the electricity creates a magnetic field around the wire.…
The first explorers had very little to help them find their way around the world. Travelers used simple maps and learned how to find their way, or navigate, using the sun and the stars. During the day, travelers can always…
We live on a huge magnet! Around the earth is a giant magnetic field, just like the magnetic field around a bar magnet.Do you know what makes the earth magnetic? Very deep inside the earth, there’s hot molten metal.The earth is…
You can’t see magnetism, but you can feel it working near a magnet. In the space around a magnet is a magnetic field. If you hold something made from magnetic material, such as iron or steel, in a magnetic field,…
We use magnetism in so many ways that modern life would be impossible without it. We need magnetism to produce large amounts of electricity in power stations. There are magnets in compasses, loudspeakers, electric motors, refrigerator doors, computer disks, and…