Motion and Measurement of Distances, class 6, science
Motion and Measurement of Distances · In ancient times no means of transport were available people mainly travel by foot and carry luggage on their back · after domestication of animals human being start using horses, camels, elephants for transportation and carrying goods from one place to another · after inventions of steam engine as a new power source it lead to development of train, automobiles, motor ships as means of transport on water and land · after the invention electricity electric trains, aeroplane are used as new mode of transportation Measurement: Measurement is the process of comparing the unknown quantity of an object to be measured with a standard unit of measurement · The quantities li...