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Cambridge Secondary (7-9). Stage 8. Science. Learner's Book - Unit 6: Light - Question 67

Cambridge Secondary (7-9) · Unit 6: Light

Question 67

In this investigation, you will make predictions about colours and light.
Work in groups of two or three.

You will need:
- white paper and coloured paper
- coloured pens
- flashlights
- coloured filters
- a room that can be darkened

Method 1
1. Write the names of some colours on a piece of coloured paper. Use different coloured pens to write each word. The colours do not have to match correctly.

For example, on yellow paper, write:
- ‘blue’ with blue pen
- ‘red’ with green pen
- ‘green’ with blue pen.

2. Use the flashlight and a red filter to illuminate the paper.
3. Ask someone from a different group to identify:
- the colour of the paper
- the words that are written in the correct colours
- the colours of pen used to write the other words.

4. Vary the words, the colours of the pens, the colours of the paper and the colours of the filters, and repeat steps 1–3.

Added safety guidance: never shine a flashlight into anyone’s eyes. Keep walkways clear in a darkened room.
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