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PIMSO 2025 - Science - Primary 3 - National Round Question 16

PIMSO Science · PIMSO 2025 - Science - Primary 3 - National Round

Question 16

Darwin conducted an experiment to find out how the size of the shadow is affected by the distance between the object and the screen. The diagram below shows the set-up of the experiment. How should the experiment be carried out in order to collect data?

Question illustration
  1. To use glass for the screen.
  2. To move the screen away from the object
  3. To move the light source nearer to the object
  4. To exchange the positions of the screen and the object