📓 Magnetism: Properties of magnets, magnetic fields

Properties of Magnets
1. Attractive Property: Magnets attract certain materials like iron, nickel, and cobalt.
2. Repulsive Property: Like poles (north-north or south-south) of two magnets repel each other.
3. Magnetic Poles: Magnets have two poles: north and south.
4. Magnetic Field: Magnets produce a magnetic field around them.

Magnetic Fields
1. Definition: A magnetic field is the region around a magnet where magnetic forces can be detected.
2. Magnetic Field Lines: Magnetic field lines emerge from the north pole and enter the south pole.
3. Strength of Magnetic Field: The strength of the magnetic field decreases as you move away from the magnet.

Types of Magnets
1. Permanent Magnets: Magnets that retain their magnetic properties forever (e.g., bar magnets, horseshoe magnets).
2. Temporary Magnets: Magnets that lose their magnetic properties when the magnetic field is removed (e.g., electromagnets).

Uses of Magnets
1. Holding Objects: Magnets are used to hold objects like paper clips, pins, and scissors.
2. Electric Motors: Magnets are used in electric motors to convert electrical energy into mechanical energy.
3. Generators: Magnets are used in generators to convert mechanical energy into electrical energy.

Fun Activities
1. Magnet Exploration: Explore the properties of magnets using everyday objects.
2. Magnetic Field Investigation: Investigate the magnetic field around a magnet using iron filings or a compass.
3. Make a Magnet: Make a temporary magnet using a coil of wire and a battery.