Standard Science Primary 4 Energy

Stan tried to look at a candle flame through a bent tube but could not see anything. When he used a straight tube, he could see the flame clearly. What does this show?

A Light can bend.
B Light travels in straight lines.
C Light cannot pass through tubes.
D The straight tube reflects light.
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Worked Solution

Step 1: The observer can only see the light source when the path is straight. Step 2: This confirms that light does not curve around corners. Step 3: Therefore, light travels in straight lines.

Correct answer: Light travels in straight lines.

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