Standard Science Primary 4 Energy

Why can we see a clear reflection of ourselves in a still pond but not in a pond with ripples?

A Light does not travel in straight lines in moving water.
B The still surface reflects light in a regular way.
C The still pond is a light source.
D Ripples absorb all the light.
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Worked Solution

Step 1: Regular reflection occurs on smooth surfaces, where light is reflected at the same angle. Step [2-9]: Rough surfaces (ripples) cause diffuse reflection, scattering light in many directions. Step [2-9]: Only regular reflection produces a clear image.

Correct answer: The still surface reflects light in a regular way.

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