Standard Science Primary 4 Energy

Which of the following determines the size of a shadow on a screen?

A The color of the object.
B The brightness of the light source.
C The distance between the object and the light source.
D The shape of the screen.
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Worked Solution

Step 1: Shadow size changes based on distances. Step 2: Moving the object closer to the light source makes the shadow larger. Step 3: Moving the object further makes it smaller. Step 4: Therefore, distance is the key factor.

Correct answer: The distance between the object and the light source.

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