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Motion and Time class 7 science extra questions

Motion and Time class 7 extra questions

Motion and Time class 7 extra questions
Download class 7 science extra questions


1. Answer the following

  • What is the S.I unit of measurement for speed.
  • What is a pendulum bob’s resting position called?
  • What is the posture of the body called when it does not alter in relation to its surroundings?
  • Name a device that measures the vehicle’s speed.
  • Name a device that measures a vehicle’s distance traveled.
  • What is the amount of time it takes a pendulum to complete one oscillation called?
  • What is a pendulum’s metallic ball called?
  • Name the material in which the crystals vibrate at an extremely rapid and accurate pace.
  • Name a timepiece that uses the shadow of a pointer cast by the sun on a graded plate to display the time.
 

2. State True/False:

  • A speedometer is an instrument to measure a vehicle’s speed at a particular speed.
  • The speed of a car is always uniform.
  • The kilometer is the SI unit of distance.
  • Speed is a vector quantity.
  • The speed of light is always faster than sound.

3. Match the following:

‘A’              ‘B’
One kilometer 100 years
Odometer 1000 m
One hour   Vehicle’s speed
A century 3600 s
Speedometer Total distance covered



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