NCERT Class VI Science Solutions: Chapter 10 – Motion and Measurement of Distance Part 1
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Question 1:
Give two examples each, of modes of transport used on land, water and air.
Answer:
Modes of transport or types of transportation are referred to a combination of networks, infrastructures, vehicles and operations. These include walking, the road transport system, rail, ship transport and modern aviation.
Land transport: Bus, train, motorbike.
Water transport: Boat, ship, steamer.
Air Transport: Aero plane, Helicopter.
Question 2:
Fill in the blanks:

One metre is ______________ cm.

Five kilometer is ______________ m.

Motion of a child on a swing is ______________.

Motion of the needle of a sewing machine is ______________.

Motion of wheel of a bicycle is______________.
Answer:

One metre is 100 cm.

Five kilometer is 5000 m.

Motion of a child on a swing is periodic motion.

Motion of the needle of a sewing machine is periodic motion.

Motion of wheel of a bicycle is circular motion.
Question 3:
Why can a pace or a footstep not be used as a standard unit of length?
Answer:
A pace or a footstep not be used as a standard unit of length because the size of pace and footstep vary from person to person. This will lead to confusion while measuring the lengths by different persons. We should use standard units like International System of Units (SI Units).
Question 4:
Arrange the following lengths in their increasing magnitude:
1 meter, 1 centimeter, 1 kilometer, 1 millimeter.
Answer:
1 millimeter, 1 centimeter, 1 meter, 1 kilometer.
Question 5:
The height of a person is 1.65 m. Express it into cm and mm.
Answer:
We know that 1 metre and 1 metre
So,
And
Question 6:
The distance between Radha's home and her school is 3250 m. express this distance into km.
Answer:
We know that
So,