Primary 4 Science — Energy Practice | Standard

Standard Science Primary 4 Energy

Sara placed a wooden block between a torch and a screen. She observed a dark shadow on the screen. Why did the shadow form?

A The screen absorbs the light from the torch.

B Light travels in straight lines and is blocked by the opaque block.

C The block reflects light.

D The block is transparent.

Show Worked Solution

Step 1: Light travels in straight lines. Step 2: Wood is an opaque material. Step 3: When an opaque object blocks light, a shadow forms behind it.

Correct answer: Light travels in straight lines and is blocked by the opaque block.

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