Science 2 · Unit 5: Light · Cambridge Primary Science Stage 2

Questions

1. 1. What is a light source?

   • something that makes sound
   • something that reflects light
   • something that is dark
   • something that makes light
   Check

2. 2. Where do we get most of our light in the day time?

   • the Moon
   • street lights
   • the Sun
   • candles
   Check

3. 3. Is the Moon a light source?

   • Yes
   • No
   Check

4. 4. Which one is a light source?

   • a candle flame
   • a shiny spoon
   • the Moon
   • a mirror
   Check

5. 5. Which one is not a light source?

   • a lamp
   • the Sun
   • a mirror
   • a television screen
   Check

6. 6. Which light source is not powered by electricity?

   • a flashlight
   • a street light
   • a computer screen
   • the Sun
   Check

7. 7. Which light source is powered by electricity?

   • a campfire
   • the Sun
   • a flashlight
   • a candle
   Check

8. 8. Are fireworks a light source?

   • Yes
   • No
   Check

9. 9. What does the Moon do with light from the Sun?

   • makes it
   • reflects it
   • eats it
   • hides it
   Check

10. 10. How can you test which flashlight is brightest?

    • look straight into it
    • count how many sheets of paper are needed to stop its light
    • weigh it
    • listen to it
    Check

11. 11. A flashlight needs 10 sheets of paper to stop its light. Another needs 4. Which is brighter?

    • the one that needs 10 sheets
    • the one that needs 4 sheets
    Check

12. 12. Why must you never look at very bright lights?

    • They make you sleepy.
    • They can hurt your eyes.
    • They make you hungry.
    • They turn off.
    Check

13. 13. Why are most light sources in school powered by electricity?

    • Fires are better in classrooms.
    • The Sun is broken.
    • Candles are too bright.
    • Electric lights are bright and safe to switch on and off.
    Check

14. 14. Materials that reflect a lot of light look ...

    • dark
    • bright
    • dull
    • black
    Check