Standard Science Primary 4 Energy

Luke holds a flat rectangular piece of cardboard horizontally under a ceiling light. What is the shape of the shadow on the floor?

A A triangle
B A thin line
C A rectangle
D A circle
Show Worked Solution

Worked Solution

Step 1: The shadow shape depends on the shape of the object facing the light source. Step [2-9]: Holding the rectangle horizontally means the rectangular face blocks the light from the ceiling. Step [2-9]: The shadow will be a rectangle.

Correct answer: A rectangle

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