What is a magnet? - Presentation

A magnet is a material or object that produces a magnetic field, which is invisible but responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets. In educational resources, such as those provided by BBC Bitesize, students can learn about the nature of magnets and the metals that are magnetic. Not all metals are magnetic; for instance, aluminium, copper, and gold do not exhibit magnetic properties. Conversely, metals containing iron, like steel, are magnetic due to their iron content. This characteristic is why even a simple steel paperclip is drawn towards a magnet. Interestingly, precious metals used in jewellery, such as gold and silver, are non-magnetic.

When exploring the concept of magnetic forces, students learn that these forces can either push away or pull together magnets depending on the orientation of their poles. The strongest magnetic force is found at the ends of a magnet, known as the north and south poles. Identical poles facing each other will cause the magnets to repel, while opposite poles will attract. This fundamental knowledge of magnetism is extended through practical activities where students are encouraged to use magnets and discover these principles firsthand. They are also tasked with creating a list of magnetic and non-magnetic metals and formulating questions about magnets and magnetism to test each other's understanding, thereby reinforcing their learning through interactive engagement.