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Example of science gcse lesson checklist 3 (zs)

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Electricity is generated at high voltages at power stations and distributed through transformers and power lines along the National Grid to consumers. Step up transformers increase the voltage for more efficient long-distance transmission over power lines, while step down transformers lower the voltage to the 230V used safely in homes, with overhead cables connecting neighborhoods to the grid and underground lines an alternative.

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The National Grid 1. How is electricity distributed from power stations to consumers? ............................................................................................................................................... 2. Label the main parts of the diagram below. Use the following keywords to help you: Power station; Power lines; Overhead cables; Home; 230V; Step up transformer; Pylon; Step-down transformer 3. What does a step up transformer do? .......................................................................... 4. What happens to the current when voltage is increased? ....................................... 5. Why do we use step up transformers? .......................................................................... 6. What is a step down transformer? ................................................................................ 7. Why do we need to use a step down transformer? ................................................... 8. What voltage is the electricity used in our homes?................................................... Checklist Tick
1 Electricity is distributed from power stations to consumers along the National Grid 2 I can label and identify the main parts of the National Grid 3 For a given power increasing the voltage reduces the current required and this reduces the energy losses in the cables 4 I know why transformers are an essential part of the National Grid 5 I can compare the advantages and disadvantages of overhead power lines and underground cables

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Example of science gcse lesson checklist 3 (zs)

  • 1. The National Grid 1. How is electricity distributed from power stations to consumers? ............................................................................................................................................... 2. Label the main parts of the diagram below. Use the following keywords to help you: Power station; Power lines; Overhead cables; Home; 230V; Step up transformer; Pylon; Step-down transformer 3. What does a step up transformer do? .......................................................................... 4. What happens to the current when voltage is increased? ....................................... 5. Why do we use step up transformers? .......................................................................... 6. What is a step down transformer? ................................................................................ 7. Why do we need to use a step down transformer? ................................................... 8. What voltage is the electricity used in our homes?................................................... Checklist Tick
  • 2. 1 Electricity is distributed from power stations to consumers along the National Grid 2 I can label and identify the main parts of the National Grid 3 For a given power increasing the voltage reduces the current required and this reduces the energy losses in the cables 4 I know why transformers are an essential part of the National Grid 5 I can compare the advantages and disadvantages of overhead power lines and underground cables