Making+rainbows

8K Light

//N.B. this is a double lesson//

Explain what the spectrum is and how to make one from white light. Describe how filters can be used to make coloured light. Explain why some objects appear coloured. Work out what different coloured objects will look like in coloured light.
 * Objectives (what you will learn this lesson)**


 * Starter**
 * Key term quiz / review completed homework

> media type="file" key="ES8_Ke157_10ani.swf" width="612" height="459"
 * Activities**
 * 1) Review how refraction works - discussion
 * 2) Watch the demonstration and then use a prism to split white light into a spectrum
 * 3) Now use a second prism to join all the colours to make white again
 * 4) Look at the demonstration of the colour wheel
 * 5) Review how prisms work using this [|freezeray animation] now try this experiment for yourself
 * 6) Summarise your learning about spectrums and dispersion in this [|worksheet]
 * 7) In your box you have different shaped prisms carry out the investigation outlined in [|splitting light]
 * 8) How do coloured filters work? Watch the demonstration and experiment for yourself.
 * 1) Watch the video on newton and light
 * 2) Use your knowledge in the quiz to try to predict what colours each flag will appear to be in the [|coloured filters animation]
 * 3) Now try this worksheet on [|coloured light]
 * 4) Now answer q1-7 from Exploring Science p156-7
 * 5) Extension: Read through [|rainbows and glories] and answer the questions

Newton and light media type="file" key="ES8_Ke157_04vco.flv" width="360" height="270"
 * Videos**

Review completed classwork / key term quiz
 * Summary**

Review the simulation on [|coloured filters], read through the [|coloured light worksheet], complete, print-off and stick the worksheet into your exercise book**.**
 * Homework**