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NCERT Solutions for Class 6th Science

 

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Chapter 10. MOTION AND MEASUREMENT OF DISTANCES

Chapter Review

 

 

 

 

Chapter Review:

 

  • Cycle, bus, car, bull cart, train, boat, ship, aeroplane and helicopter are the main means of transport. 
  • Cycle, moterbike, car, bus and train are the means of the road transport.
  • Helicopter, jet aircraft, aeroplane are the means of air transport.
  • Boat, steamer, ship are the means of water transport.
  • The fixed quantity of measurement is called unit
  • The SI unit of length is a metre (m).
  • The full form of SI unit is International System of unit
  • The magnitude of measuring is expressed into two parts i.e (i) Numerical part (ii)  Unit part.
  • The length of a foot, the width of a finger, and the distance of a step are the ancient ways of measuring length. 
  • The modern ways of measuring length are milimetre, centimetre, metre and kilometre etc. 
  • Milimetre, centimetre  and metre are used to measure the small distances while kilometre for long distances.
  • 1 kilometre is equal to 1000 metres.
  • 100 centimetres are equal to 1 metre.
  • There are 10 milimetres in 1 centimetre.
  • There should be used a thread for measuring the curve line then thread is measured by scale. 
  • The changing in position of an object along with time is known as motion.
  • There are following types of motions: rectilinear motion, circular
    motion, periodic motion and rotational motion etc. 
  • When the objects move along a straight line. This type of motion is called rectilinear motion.
  • When an object maintains a fixed distance from a fixed point during motion such a motion is known as circular motion
  • When an object repeats its motion after a fixed time of interval such a motion is known as periodic motion
  • When an object moves on its axis is called rotational motion

 

 

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