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Class 7
Chapter 8 Class 7 - Measurement of Time and Motion (Curiosity)

Sundial - Measuring Time Through Shadows

Last updated at May 4, 2026 by

  • A sundial uses the shadow of an object cast by sunlight.
  • The shadow moves as the Sun moves across the sky.
  • Markings on a flat surface show the time.

Limitation of a Sundial

  • It only works during the day.
  • It cannot tell time at night or on cloudy days.
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