Standard Science Primary 4 Energy

A wooden block was placed between a torch and a screen. What will happen to the size of the shadow if the wooden block is moved closer to the torch?

A The shadow becomes smaller.
B The shadow becomes bigger.
C The shadow remains the same size.
D No shadow will be formed.
Show Worked Solution

Worked Solution

Step 1: Shadow size depends on the distance between the source, object, and screen. Step 2: Moving the object closer to the light source blocks more light. Step 3: Therefore, the shadow cast on the screen increases in size.

Correct answer: The shadow becomes bigger.

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free