Nature of Light what is colour activity2

From Karnataka Open Educational Resources
Jump to navigation Jump to search

The objective is to understand colours as different wavelengths associated with light.

  • Estimated Time - 30 minutes
  • Materials/ Resources needed

Computer, projector, power

  • Prerequisites/Instructions, if any
  • Multimedia resources

  • Website interactives/ links/ simulations
  • Process (How to do the activity)

Watch the video and discuss with the student their understanding.

  • Developmental Questions (What discussion questions)
  1. How does a wave move? The vocabulary is wave propagation)
  2. What gets transmitted?
  3. What can you say about the wave when the frequency is high?
  4. What can you say about the wave when the wavelength is high?
  5. It is possible to look at light as a wave; the waves are not of material objects but travelling waves changing electric and magnetic fields.
  6. Different wavelengths are associated with different energy levels and different kind of radiation(light is a form of electromagnetic radiation; there are other electromagnetic radiations)
  7. The higher the frequency the higher the energy; this is seen as different colours of the visible spectrum
  8. Can we break down these seven colours more? (No; demonstrate with a prism; these are pure colours)
  • Evaluation (Questions for assessment of the child)

Draw a ray diagram to show how this theory explains reflection.

  • Question Corner