KS3 Unit 8k - Light 1© NTScience.co.uk 2005

Light

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Q1. What enters the eye to let us see

colours?

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A1. Light

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Q2. Name a valuable, extremely hard,

colourless gemstone

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A2. Diamond

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Q3. What are lenses, windows and prisms

usually made of?

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A3. Glass

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Q4. What do we call something that can be seen through clearly?

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A4. Transparent

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Q5. What do we call something that lets light through but does not let

us see clearly?

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A5. Translucent

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Q6. What do we call something that does not

transmit light?

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A6. Opaque

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Q7. Where on an object is the light absorbed or

reflected?

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A7. The surface

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Q8. Give a word that means a picture formed

by light.

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A8. Image

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Q9. What do you see in a mirror?

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A9. A reflection

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Q10. What do we call the bending of light

when it passes from air to water?

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A10. Refraction

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Q11. What do we call the line at right angles to a surface or interface?

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A11. The normal

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Q12. What is the scientific term for the incoming light ray?

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A12. The incident ray

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Q13. Name the main optical component in

spectacles(glasses) and telescopes

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A13. A lens

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Q14. Which colour surface reflects all

incident light equally?

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A14. White

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Q15. Which colour surface absorbs all

incident light?

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A15. Black

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Q16. What is the scientific term for the

colours of the rainbow?

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A16. Spectrum

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Well Done!Now check your score