Nature of Light white light and colours activity1

White paper, Pins, Source of Light, Prisms, Dark room
 * Estimated Time - 2 periods of 40 minutes
 * Materials/ Resources needed
 * Prerequisites/Instructions, if any
 * 1) Activity on Recombination of Colours
 * 2) Dark room for light experiments
 * Multimedia resources
 * Website interactives/ links/ simulations
 * Process (How to do the activity)
 * 1) Demonstrate the dispersion using a prism and recombination of the light
 * 2) Students must do this experiment in groups
 * 3) The teacher must demonstrate carefully how to position the prism, how to observe rays in light experiments
 * 4) Students must be able to draw ray diagrams showing the split of the spectrum
 * Developmental Questions (What discussion questions)
 * 1) When the light falls on the prism, what did you expect to see? What happened?
 * 2) What are the colours you see? What is the order of the colours?
 * Evaluation (Questions for assessment of the child)
 * 1) From the incoming beam of light, which colour showed the maximum angle of dispersion? (This question can be picked up later to discuss wavelengths and electromagnetic spectrum)
 * 2) If you change the direction of the incoming light, what happens to the dispersion?
 * 3) Observe the accuracy of the diagrams
 * Question Corner