Standard Science Primary 4 Energy

Siti placed a wooden block between a torch and a screen. She observed a shadow on the screen. Why was a shadow formed?

A The wooden block reflects light.
B The wooden block allows some light to pass through.
C The wooden block is transparent.
D The wooden block is opaque and blocks light.
Show Worked Solution

Worked Solution

Step 1: Light travels in straight lines. Step 2: When an opaque object (wood) is in its path, light cannot pass through. Step 3: The area where light is blocked becomes a shadow.

Correct answer: The wooden block is opaque and blocks light.

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