Lesson eLearning

At noon the sun is 70° above the horizon. It lowers by 8° each hour after noon. What is the angle of the sun at 4:30 pm?

hard 3 marks Class 4 · EVS · From the Window
Answer
34°

The correct answer is 34° — Hence the sun’s angle at 4:30 pm is 34°.

Step-by-step solution

  1. From noon to 4:30 pm there are 4.5 hours.
  2. The sun lowers by 8° per hour, so the total decrease is 8° × 4.5 = 36°.
  3. Subtract this from the noon angle: 70° − 36° = 34°.
  4. Hence the sun’s angle at 4:30 pm is 34°.
Common mistake: Using 8° for 4.5 hours without multiplication

Concept tested: Sun’s angular motion

Published · How this solution was prepared and checked

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