How and why do magnets attract? What kinds?
Why do magnets work? Magnetism is an invisible force felt within the space around a magnet. This space, called the magnetic field, can either attract (pull) or repel (push away) other magnets and some types of metal. All magnets have two ends (poles). These poles are opposites and are called the north and south poles. Opposite poles attract, while like (similar) poles, repel. The Earth’s core has its own magnetic field. Magnetic north and south are near the geographic north and south poles. NASA has been experimenting with magnetic fluids for over 30 years. Magnetic fluids were made to help put fuel into a rocket engine. NASA was trying to solve the problem. of how to move fuel without gravity. Tiny pieces of iron were put into the fuel. A magnet pulls the iron and could help get the fuel into the engine. Magnetic fluids are made by mixing pieces of metal in liquids to make a fluid that is very different from other liquids. It will stick to a magnet and can be directed by magnetic forc
