Advanced Science Primary 4 Energy

Study the setup below. Which material was most likely used for Sheet K if a very dark shadow was formed on the screen?

A Metal sheet
B Clear glass
C Clear plastic
D Tracing paper
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Worked Solution

Step 1: A dark shadow is formed by an opaque material. Step 2: Opaque materials block all light. Step 3: Metal is opaque, while the others are transparent or translucent.

Correct answer: Metal sheet

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