Advanced Science Primary 4 Energy

A torch was shone on a wooden block, and a shadow was formed on a screen. If the wooden block is moved CLOSER to the torch, what happens to the size of the shadow?

A The shadow becomes larger.
B The shadow becomes smaller.
C The shadow disappears.
D The shadow remains the same size.
Show Worked Solution

Worked Solution

Step 1: Light travels in straight lines. Step 2: Moving the object closer to the source causes it to block a larger angle of light rays. Step 3: This results in a larger shadow on the screen.

Correct answer: The shadow becomes larger.

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