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Year 10 - Design and technology

LEDs

Systems approach to design: Sustainable Futures

Unit Summary

Pupils will develop knowledge of electronic components and a systems approach to designing. They will learn about different components and use these to build and test circuits for different purposes. They will design a system to control a greenhouse environment, considering the different variables.

Lesson Summary

You will learn to explain the function of an LED and identify and use them as output components in a control system.

Key Notes

  • Incandescent means emitting light due to high temperature.
  • Incandescent light bulbs use more energy than LEDs.
  • LEDs are more energy efficient due to the movement of particles directly creating light without high temperatures.
  • Electroluminescent materials are used in LEDs, these compounds can be changed to create different coloured LEDs.
  • LEDs can be used individually or grouped together in a matrix to display images or words.

Vocabulary To Learn

  • incandescent: emitting light due to high temperature
  • Watts: measurement of energy consumption
  • light-emitting diode (LED): an output device that glows when electricity is passed through it
  • electroluminescence: materials emit light when exposed to an electric field or current

Common Mistakes To Avoid

  • LEDs are always used individually.

3 Quick Questions (With Answers)

1. Explain the lesson in two key points.

Incandescent means emitting light due to high temperature. Incandescent light bulbs use more energy than LEDs.

2. What does this key word mean in this lesson? 'incandescent'

emitting light due to high temperature.

3. Correct this common mistake.

Mistake: LEDs are always used individually. Correction: LEDs can be grouped in strips or matrices to create patterns or messages.

More Lessons In This Unit

Browse all guides in the Year 10 Design and technology guide library.