| A | B | 
| compass | A device containing a magnetized needle that moves freely and is used to show direction. | 
| lines of force | The lines that form a pattern showing the size and shape of a magnetic force field. | 
| lodestone | A naturally magnetic mineral found at or near earth's surface. | 
| magnetic field | The space around a magnet withing which the force of the magnet can act. | 
| magnetism | A magnet's property of attracting certain materials, mainly iron and steel. | 
| north pole | One of the ends of a magnet where the magnetic force is strongest; it points to the north when the magnet moves freely. | 
| south pole | One of the ends of a magnet where the magnetic force is strongest; it points to the south when the magnet moves freely. | 
| magnet | An object that has the property of attracting cerain materials, mainly iron and steel. |