Advanced Science Primary 4 Energy

The graph shows the length of a shadow of a vertical pole measured over 6 hours. At what time is the Sun likely directly overhead?

A Middle of graph (Minimum length)
B Shadow length never changes
C Start of graph (Max length)
D End of graph (Max length)
Show Worked Solution

Worked Solution

Step 1: Shadow length depends on the angle of light. Step [2-9]: When light is directly overhead (90 degrees), the shadow is at its shortest. Step [2-9]: The middle of the graph shows the lowest point in shadow length.

Correct answer: Middle of graph (Minimum length)

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