Natural Sciences and Technology Grade 5 Term 3: Energy and Change Mains Electricity (PPT 2)

Topic 3 Energy and Change Mains electricity Gr 5 Natural Sciences and Technology – Term 3, Topic 3

How electricity is made Gr 5 Natural Sciences and Technology – Term 3, Topic 3 The coal is burned to boil the water and to transfer the water into steam. The steam is directed towards the turbine to make it turn. The turbine shaft is connected to the generator-rotor.

How electricity is made Gr 5 Natural Sciences and Technology – Term 3, Topic 3 The steam that turned the turbine turns into water as it cools The same water is used to make steam. Electricity is transferred in cables that form a steam circle. We can use this electricity when we are connected to the steam circle.

How electricity is made Gr 5 Natural Sciences and Technology – Term 3, Topic 3

How does electricity get to your home? Gr 5 Natural Sciences and Technology – Term 3, Topic 3 Big power stations use coal, oil or nuclear energy to generate (make electricity) Fast running water can also be used to make electricity.

How does electricity get to your home? Gr 5 Natural Sciences and Technology – Term 3, Topic 3 The electricity is carried over long distances by power lines (wires) that you may have seen along the road. Overhead or underground cables take the electricity to the places where we use it, such as our houses, schools, factories, shops, etc.

How does electricity get to your home? Gr 5 Natural Sciences and Technology – Term 3, Topic 3 Transformers in substations make the electricity suitable for us to use. Electricity goes through a transformer that increases the voltage. A substation near your house lowers the voltage of the electricity in order for you to use it.

How does electricity get to your home? Gr 5 Natural Sciences and Technology – Term 3, Topic 3