Class 7 NCERT • Curiosity Science Portal
Ch 08: Measurement of Time and Motion
Select a topic or study module below to explore ancient clocks, simple pendulum oscillations, SI units of time, speed formulas, uniform vs non-uniform motion, NCERT solutions, and quizzes.
Topic 01 • Ancient Timekeeping
Sundials (Samrat Yantra), Ghatika-yantra Water Clocks, Hourglasses & Candle Clocks
Topic 02 • The Simple Pendulum
Oscillatory Motion, Mean & Extreme Positions, Time Period & Galileo’s Discovery
Topic 03 • SI Units & Modern Clocks
SI Unit of Time (s, min, h), Quartz Clocks, Atomic Clocks & Millisecond Timing
Topic 04 • Speed & Calculations
Speed = Distance / Time, m/s vs km/h Conversions, Speedometers & Odometers
Topic 05 • Uniform vs Non-Uniform
Uniform vs Non-Uniform Linear Motion, Equal Time Intervals & Average Speed
Module 06 • Solutions & HOTS