CBSE · Class 7 · Science · Chapter 8

Measurement of Time and Motion

Measure time and describe motion using distance, speed, units, graphs and observations from daily life.

6 lessons 45 min
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Lessons in this chapter

  1. 1How We Measure TimeExplore how repeated events became clocks and how a simple water clock measures an interval.
  2. 2The Pendulum and Accurate TimekeepingInvestigate a pendulum’s repeated motion and connect it to units and precision in clocks.
  3. 3Comparing Motion and Calculating SpeedLearn to compare different journeys by finding distance travelled per unit time.
  4. 4Finding Distance, Time, and Average SpeedUse the speed relationship in three directions and interpret what a whole-journey speed means.
  5. 5Uniform and Non-uniform MotionRecognise patterns of motion by comparing distances travelled in equal time intervals.
  6. 6Chapter Summary and PracticeBring timekeeping and motion together, then apply the chapter’s ideas to mixed problems.
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