Lunar cycles and daily sunrises/sunsets provided early humans with natural patterns to measure time. The Moon’s phases marked months and the Sun’s regular rise and set marked days, forming the basis for ancient timekeeping and calendars.
class 8 science chapter 1 exploring the investigative world of science question answer
Class 8 Science Curiosity Textbook Chapter 1 Exploring the Investigative World of Science question answer
Early humans noticed consistent patterns in the Moon’s phases and the daily rising and setting of the Sun. These natural cycles helped them measure time—days by the Sun and months by the Moon. Over time, they developed calendars and schedules for farming, celebrations and travel. These timekeeping systems allowed people to organize life more efficiently. Observing celestial movements gave rise to both solar and lunar calendars, forming the foundation of timekeeping even before clocks were invented.
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