Class 7 · Science · Curiosity

8. Measurement of Time and Motion

Try question 1

The SI unit of time is the

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Answer and explanation

Answer: C. second

The second (s) is the base unit of time.

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Try question 2

A car travels 120 km in 2 hours. Its average speed is

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Answer and explanation

Answer: B. 60 km/h

120 ÷ 2 = 60 km/h.

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Try question 3

The instrument in a vehicle that shows the distance travelled is the

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Answer and explanation

Answer: B. odometer

The speedometer shows speed; the odometer shows distance.

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