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

8.1.2 SI Unit of Time

Last updated at May 4, 2026 by

  • The SI unit of time is the second .
  • Its symbol is s .
  • The larger units are minute (min) and hour (h) .

The relationships between units are:

  • 60 s = 1 min
    Sixty seconds make one minute.
  • 60 min = 1 h
    Sixty minutes make one hour.
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