NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances

NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances help students understand types of motion, standard units of measurement, and tools used to measure length. These solutions explain concepts in simple language with step-by-step answers to textbook questions. Students learn about uniform and non-uniform motion and the importance of accurate measurement. The solutions follow the latest CBSE syllabus and support better revision and exam preparation.

Imagine you want to tell a friend how far your school is from your house, or you need to know if a new desk will fit in your bedroom. How can you do that? In ancient times, travelers used their arms and footsteps to measure the length. However, it was difficult, as everyone’s body is different. Thus, learning motion and measurement of distances class 6 questions and answers becomes essential.

It is important to understand the science behind how we travel from one place to another and how we measure. Whether it’s a car moving on a road or a pendulum swinging in a clock, every movement follows specific rules in science. In this article, we will discuss the clear concepts of ncert solutions class 6 science chapter 10 to help you solve textbook problems with confidence and precision. 

Motion and Measurement of Distances Class 6 Questions and Answer Overview 

Before we had cars, aeroplanes, or trains, humans relied on their own two feet to carry goods. Later, animals like horses and camels were used to pull carts. The invention of the wheel changed everything, making transport much faster and smoother.

As time passed, steam engines and internal combustion engines led to the development of railways and automobiles. Today, we even have supersonic jets and spacecraft. Studying motion and measurement of distances class 6 questions and answers helps us appreciate this journey from simple footsteps to advanced technology.

Before diving into questions, let’s understand the basic concepts of motion and measurements:

Why Do We Need Standard Units of Measurement?

In the past, people used various parts of their body to measure length:

• Handspan: The distance from the tip of the thumb to the tip of the little finger.

• Cubit: The length from the elbow to the fingertips.

• Foot: The length of a person's foot.

The problem? A tall person’s cubit is longer than a child’s cubit! To avoid this confusion, scientists created a uniform system called the International System of Units (SI Units).

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What is the Standard Unit of Length?

The standard unit of length used worldwide is the metre (m). For different scales, we use:

• Kilometres (km): For long distances (1 km = 1000 m).

• Centimetres (cm): For smaller objects (1 m = 100 cm).

• Millimetres (mm): For very tiny objects (1 cm = 10 mm).

How to Measure Length of an Object Accurately?

Measuring might seem simple, but a small mistake can lead to wrong results. When using a scale, keep these tips in mind:

1. Placement: Place the scale in contact with the object along its length.

2. Broken Ends: If the zero mark is hidden or broken, start from another mark (like 1.0 cm) and subtract that value from the final reading.

3. Eye Position: Your eye must be exactly in front of the point where the measurement is being taken. Looking from the side causes parallax errors.

Read More - NCERT Solutions for Class 6 Maths Chapter 6 Perimeter and Area

How to Measure a Curved Line?

You cannot measure a curved line directly with a straight ruler. Instead, use a thread. Place the thread along the curve, mark the start and end points on the thread, and then measure that thread length against a straight ruler.

Understanding Different Types of Motion

When an object changes its position with time, we say it is in motion. However, not all objects move the same way. The cbse class 6 science chapter 10 solutions categorise motion into three main types:

1. Rectilinear Motion

This occurs when an object moves along a straight line.

• Examples: A group of soldiers marching in a parade, a stone falling vertically, or a car driving on a straight highway.

2. Circular Motion

In this type of motion, an object moves such that its distance from a fixed centre point remains the same.

• Examples: The hands of a clock, the blades of a ceiling fan, or a bullock tied to a pole walking in circles.

3. Periodic Motion

If an object repeats its motion after a fixed interval of time, it is called periodic motion.

• Examples: A child on a swing, the branch of a tree swaying to and fro, or the string of a guitar being plucked.

Read More - NCERT Solutions for Class 6 Maths Chapter 6 Perimeter and Area

Motion and Measurement of Distances Class 6 Questions and Answers for Students 

Below are the solved exercises from the textbook to help you with your homework and revision.

Question 1: Give two examples each of modes of transport used on land, water, and air.

• Land: Bus, Train.

• Water: Ship, Boat.

• Air: Aeroplane, Helicopter.

Question 2: Fill in the blanks:

• One metre is 100 cm.

• Five kilometre 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?

A pace or footstep cannot be used as a standard unit because the size of a foot varies from person to person. This would lead to inconsistent and inaccurate measurements.

Question 4: Arrange the following lengths in increasing order of magnitude: 1 metre, 1 centimetre, 1 kilometre, 1 millimetre.

1 millimetre < 1 centimetre < 1 metre < 1 kilometre.

Question 5: The height of a person is 1.65 m. Express it into cm and mm.

• To convert to cm: 1.65 x 100 = 165 cm.

• To convert to mm: 165 x 10 = 1650 mm.

Question 6: The distance between Radha’s home and her school is 3250 m. Express this distance into km.

Since 1000 m = 1 km, we divide 3250 by 1000.

Result: 3.25 km.

Question 7: While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle?

Length = Final Reading - Initial Reading

Length = 33.1 cm - 3.0 cm = 30.1 cm.

Important Topics to Cover in Motion and Measurement of Distances Class 6 Questions and Answer

• Story of transport

• How wide is this desk?

• Some measurements

• Standard units of measurements

• Correct measurement of length

• Measuring the length of a curved line

• Moving things around us

• Types of motion.

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