Science 3 · Unit 3: Light and shadows · Cambridge Primary Science Stage 3

Questions

1. 1. What happens to a shadow when an object moves towards the light source?

   • It gets bigger.
   • It stays the same.
   • It gets smaller.
   • It disappears.
   Check

2. 2. What happens to a shadow when an object moves away from the light source?

   • It gets brighter.
   • It gets smaller.
   • It gets bigger.
   • It changes colour.
   Check

3. 3. At noon the Sun is high. What is Kamal's shadow like?

   • the same as at 4 pm
   • very short
   • coloured
   • very long
   Check

4. 4. At 4 pm the Sun is lower in the sky. What happens to Kamal's shadow?

   • It gets longer.
   • It disappears.
   • It gets shorter.
   • It turns blue.
   Check

5. 5. Why are shadows very long late in the day?

   • The Sun is bigger.
   • The Sun is low in the sky.
   • The Sun is high in the sky.
   • People grow taller.
   Check

6. 6. Look at Marcus's table. How much closer to the light source did he move the object each time?

   • 10 cm
   • 50 cm
   • 5 cm
   • 20 cm
   Check

7. 7. Look at Marcus's table. At what distance was the shadow biggest?

   • 30 cm from the light source
   • 50 cm from the light source
   • 40 cm from the light source
   • 10 cm from the light source
   Check

8. 8. Sofia moves a toy under a flashlight. Why does its shadow change shape?

   • The flashlight changes colour.
   • The table moves.
   • The toy changes shape.
   • A different part of the toy blocks the light.
   Check

9. 9. Why were the lights turned off for the shadow investigation?

   • to make it colder
   • to save the flashlight
   • so the shadows are easier to see
   • to make the toy move
   Check

10. 10. How can you make your hand's shadow bigger while the flashlight stays still?

    • turn off the flashlight
    • move your hand closer to the flashlight
    • move your hand closer to the wall
    • close your eyes
    Check

11. 11. What is a conclusion?

    • the title of the test
    • the equipment you use
    • a guess before you start
    • what your results show
    Check

12. 12. Can a shadow look very different from the object making it?

    • Yes
    • No
    Check

13. 13. A pencil is held upright under a light, pointing at the light. What shadow might it make?

    • a big square
    • a long rectangle
    • a small circle
    • no shadow at all
    Check