Demonstrate that like poles repel each other while un-like poles attract each other 7 " Investigate that a freely suspended magnet always points in the North south ' Identify the various uses of magnets and magnetic materials in daily life.
Demonstrate how magnetism can be formed and stored. Differentiate between temporary and permanent magnets. n Where we use Electricity? You know that machines make our work easier. Every work to be done requites energy. The machines decrease the requirement of energy but they do use energy. The main energy used in machines is the electrical energy or power When we supply electrical power to a machine or instrument, the electrical power flows in it. The flow of the electrical power is called electricity You have seen many instruments or devices and machines in your home that work on electricity . Your mother uses iron, washing machine, sewing machine etc.
1:You use energy saver bulbs to get light and run fans for air.
2:, A number of other home appliances like TV, computer, radio, air conditioners refrigerators use electricity.
3:Similarly, electricity is used in offices and markets for many purposes. Factories use electricity to run machines for making some products.
Did you ever think about the electricity supply to any of your home appliance?
What your mother does when she clothes in washing machine?
1:She plugs the power wire of machine in the socket.
2: The socket in the wall has electricity connection, from where electricity passes wire and reaches the machinery of the washing.
3:The wheel at the base of washing chamber of machine starts rotations.It mixes the water and washing powder.The mixturespreads over the clothes.
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