# 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

cm.__100__Five kilometer is

m.__5000__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,