Standard Science Primary 4 Energy

Siti placed a metal ball between a torch and a screen. Which of the following would cause the shadow on the screen to become BIGGER?

A Move the metal ball closer to the torch.
B Move the metal ball closer to the screen.
C Use a smaller metal ball.
D Move the torch further away from the ball.
Show Worked Solution

Worked Solution

Step 1: To make a shadow larger, the object must block more light. Step 2: Moving the object closer to the light source (torch) increases the area of light blocked. Step 3: This results in a larger shadow on the screen.

Correct answer: Move the metal ball closer to the torch.

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