10 minutes maximum! Can you do it in 5?

Q1 +2. The diagram here shows the colours of the spectrum. What are the missing colours?

3. A glass triangle can be used to split white light into the colours of the spectrum. What is this triangle called?

• A. A rhomboid
• B. A prism
• C. A refractor
• D. A dispersor

4+5. The diagram below shows a light ray being reflected by a mirror.

4. Which of these reflected light rays has been drawn correctly?

5. What is the name of the dotted line labelled x in the diagram above?

• A. Construction line
• B. Incident line
• C. Reflection line
• D. Normal line

6. Grass looks green because it reflects and scatters green light. What happens to the other colours?

• A. They are absorbed
• B. They are scattered
• C. They are refracted
• D. They are filtered

7. What colour would green grass look like under a pure blue light?

• A. Blue
• B. Black
• C. Magenta
• D. Cyan

8. A student draws the letter 'e' next to a mirror. Which of these correctly shows the mirror image of the letter?

9. Which of these lines shows the path of a ray of light through a block of glass?

10. Which row of these statements best explains the words 'translucent' and 'opaque'?