Page 125 - Science Class 06

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Motion and Distance

• Rest and Mo on • Measurement

• Ancient Methods of Measuring Length • Standard Unit of Length
• How to Measure Length? • Types of Mo on

The early man had no means of transport, so

they travelled on foot. Later, they made a
wheelless cart called sledge. He used it to
carry his belongings. Sledge was drawn by
animals. He also tamed animals like horse,
elephants, mules, etc. and travelled on them.

With the passage of me, he developed
boats and yachts to travel on water. But, a er Bullock-Cart
the inven on of wheel, a revolu on came in Now, we have a number of modern and

the field of transporta on. advanced means of transport. But the
ancient people did not know how to
measure the distance they travelled. It is
believed that early Babylonians and

Egyp ans were the first who started
measuring length with forearm, hand or
finger. But, before studying about different
methods of measurement, we should study
Sledge
about rest and mo on.
People started using wheel-carts. New
REST AND MOTION
means of transport were started to be
developed with the passage of me and An object is said to be at rest if it does not

with the development in the field on change its posi on with me, in respect to
science and technology. its immediate surroundings.

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