AP Board 6th Class Science Notes Chapter 6 Fun with Magnets

AP State Board Syllabus 6th Class Science Notes Chapter 6 Fun with Magnets

→ Lodestone is a natural magnet.

→ Man-made magnets are of different shapes i.e. bar magnets, horseshoe magnets, ring-type magnets, Disc magnets, cylindrical, etc.

→ The materials that are attracted by magnets are called magnetic materials. Ex: Iron, Steel, Cobalt, etc.

→ The materials that are not attracted by magnets are called non-magnetic materials. Ex: Glass, Wood, paper, etc,

→ A bar magnet always has two ends whose attracting capacity is more than the other parts of it. The poles of the magnet lie at these ends.

→ Each magnet has two magnetic poles: North and South.

→ Like Poles (N-N, S-S) repel each other and unlike poles (N-S, S-N) attract each other.

→ A freely suspended magnet always aligns in the North-South direction.

→ The directional property of magnets is used to make a magnetic compass.

→ The magnetic compass is an instrument that is used to find directions.

→ The magnetic property possessed by a magnetic substance due to the presence of a magnet near to it is called magnetic induction.

→ Magnets lose their properties if they are heated or dropped from a height or hit with a hammer or placed near cell phones, computers, DVDs.

→ Improper storage can also cause magnets to lose their properties.

→ We use various equipment with magnets in our day-to-day life such as Speakers, electric motors, door locks, pin holders, magnetic cranes-etc.

→ Electromagnetic trains work on the principle of electromagnetic levitation.

→ Magnet: any material capable of attracting iron and producing a magnetic field outside itself.

→ Magnetic materials: the materials that are attracted by magnets are called magnetic materials.

→ Non-magnetic materials: the materials that are not attracted by magnets are called non-magnetic materials.

→ North pole: End part of the freely suspended magnet that points towards north.

→ South pole: End part of the freely suspended magnet that points towards the south.

→ Magnetic compass: A compass that is used with a magnetized needle is called a magnetic compass.

→ Like poles: Same poles of two magnets, either N – N or S – S. They repel each other.

→ Unlike poles: Different poles of two magnets, either N – S or S – N. They attract each other.

→ AttractIon: a force by which things are pulled towards each other

→ Repulsion: a force under the influence of which objects tend to move away from each other

→ Magnetic induction: the process by which an object or material is magnetized by an external magnetic field.

→ Magnetic levitation: magnetic levitation is a method by which an object is suspended with no support other than magnetic fields.

→ Poles: each of the two opposite points on the surface of a magnet at which magnetic forces are strongest.

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