Magnets can push and pull on things made of metal. Magnetism is a force. People use this force in many ways. Most of us have used magnets to hold papers on our refrigerator. Many kitchens also have a magnet on an electric can opener that grabs the lid when it is cut from the can. We can use a magnet to find a lost needle in our carpet. Magnets are used to make electric motors and generators. Without magnets, we would not have doorbells or electric motors. We wouldn't have telephones, electric lights, or computers, either.
When paper is recycled, magnets are often used to remove staples and other small bits of metal from paper. Large scrap metal recycling centers use large electromagnets to move junk cars and other large and heavy metal objects.