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  1. When you shine white light on a red tomato, it appears read.  Explain why this is so. 
  2. When you shine blue light on a tomato, it will look almost black. Explain why this is so. 
  3. Why does cellophane look slightly blue when white light shines on it?
  4. Describe the colour and appearance of an opaque object the absorbs all the colours of light.
  5. Plants absorb light energy and convert it into chemical energy.  If you shine only green light on a plant, do you think it will grow and convert the light into chemical energy? Explain your answer. 
  6. Use light rays to show and explain how a transparent object differs from a translucent object

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