# RBSE Solutions for Class 6 Science Chapter 10 Motion

RBSE Solutions for Class 6 Science Chapter 10 Motion are part of RBSE Solutions for Class 6 Science. Here we have given Rajasthan Board RBSE Class 6 Science Chapter 10 Motion.

 Board RBSE Textbook SIERT, Rajasthan Class Class 6 Subject Science Chapter Chapter 10 Chapter Name Motion Number of Questions Solved 36 Category RBSE Solutions

## Rajasthan Board RBSE Class 6 Science Chapter 10 Motion

Intext Questions

Question 1.
You may have enjoyed sliding on slides, swinging on swings, and also rotating in giant wheels in fairs. Do they perform same type of motion ? (Page 85)
No, they perform different types of motions. Straight line motion, periodic motion and circular motion.

Question 2.
Can you tell some more examples of straight line motion ? (Page 85)
Examples of straight line motion

1. Motion of a car on a straight road.
2. Trains moving on a straight track
3. Children sliding on a slide

Question 3.
You may have seen bull of a bull crusher taking rounds in a circular track. You may also have seen a moving giant wheel. Can you tell what kind of motion is shown by the bull of a bull crusher and a giant wheel ?
They perform circular motion. When anybody rotate in on a circular path, then the motion of an object is called circular motion.

Question 4.
In ancient times, the distance between two places was measured by footsteps. Short distances were mearsured by fingers and hand spans. Are these methods of measurement correct ?
No, the different sizes of foot-spans and fingers etc, of different persons result in inaccurate measurements.

Question 5.
We know that we can measure a straight line by using a ruler, but what if the line is curved ?
By putting a long thread on curve and then measuring the thread, we can measure the length of the curve.

Exercises

Question 1.
An example of circular motion is
(a) Motion of a train
(b) Motion of the bull of a bull – crusher
(c) Motion of the strings of a violin
(d) Motion of a butterfly.
(b) Motion of the bull of a bull – crusher

Question 2.
Which of the following motions does not repeat itself after certain time – inerval ?
(a) A fruit falling from a tree
(b) Beating of the heart
(c) Rotation of the earth on its axis
(d) The motion of the pendulum of a wall clock.
(a) A fruit falling from a tree

Question 3.
The S.I. unit of length is
(a) kilometer
(b) Meter
(c) Second
(d) Gram
(b) Meter

Question 4.
An example of vibratory motion is
(a) Motion of a swing
(b) Motion of a wheel
(c) Motion of a bus
(d) Motion of strings of violin
(d) Motion of strings of violin

Fill in the blanks

1. The motion of the pendulum of a wall clock is ………. .
2 The motion of the wheel of a car is an example of ……… motion.
3. The motion of a truck moving on a straight road is ………….. motion.
4. 1 kilometer is equal to …………. meters.
1. periodic motion
2. circular
3. straight line
4. 1000

Match the following columns

 Column 1 Column 2 1. Periodic motion (a) Motion of a potter’s wheel 2. Circular motion (b) Motion of the strings of a violin 3. Straight line motion (c) Motion of a swing 4. Vibratory motion (d) Motion of ball dropped from a height

1. (c), 2. (a), 3.(d), 4. (b).

Question 1.
Give two examples of a straight line motion.

1. Stone falling from a height.
2. Car running on a straight road.

Question 2.
What is motion ? Write its different types.
Motion – The change in the position of an object with time is called as motion.
Types of Motion :

1. Straight line motion
2. Circular motion
3. Rotational motion
4. Vibratory motion
5. Periodic motion

Question 3.
What is the difference between the motion of a spinning top and the motion of the bull of a bull – crusher ?
The motion of a spinning top is rotational motion while the motion of the bull of a bull – crusher is circular motion.

Question 4.
What type of motion is exhibited by a swing when you are swinging on it ?
Periodic motion.

Question 1.
How can you measure the length of a curved line ? Explain step by step.
To measure the length of a curved line ‘AB’ we take a long thread. We take one end of the thread and put it on the point ‘A’ of the curved line. Now, we move the thread along the curved line and hold the other end ofthe thread when it reaches the point ‘B’ . Now, we stretch the thread along a meter ruler and measure it. This is the length ofthe curved line.

Question 2.
Explain periodic motion with the help of examples.
The type of motion which repeats itself after a certain period of time is called as periodic motion.
Examples:

1. Motion of the pendulum of a clock
2. Children swimming on a swing.

Question 3.
In present day parks, there are many instruments of playing games. What types of motion do they show ?

 Name of the instrument Type of motion 1. Slide Linear motion 2. Sea-saw Periodic motion 3. Swing Periodic motion 4. Giant wheel Circular motion

Creative Work

Question 1.
Observe the events happening in your surroundings carefully and make a list of objects in motion. Now classify them according to the type of motion they show in the table below.

 S. No. Types of Motion Name of the Objects 1. Straight line motion Bus, Car and train. 2. Vibratory motion Violin, Guitar and Sitar. 3. Circular motion The bull of a bull-crusher and giant wheel. 4. Periodic motion Pendulum of the clock and swing 5. Rotational motion a spinning top and a potter’s wheels.

Other Important Questions

Question 1.
Rotatory motion is
( a) Simple linear motion
(b) Circular motion
(c) Periodic motion
(d) Vibratory motion
(b) Circular motion

Question 2.
The motion of soldiers in marchpast is
(a) Periodic motion
(b) Linear motion
(c) Circular motion
(d) None of these
(b) Linear motion

Question 3.
Motion of the spinning top is
(a) Rotational motion
(b) Circular motion
(c) Vibratory motion
(d) Linear motion
(a) Rotational motion

Question 4.
When we fall a stone on water, then motion of ripples of water is
(a) Linear motion
(b) Circular motion
(c) Vibratory motion
(d) None of these
(c) Vibratory motion

Question 5.
Vibratory motion is
(a) Oscillatory motion
(b) Linear motion
(c) Circular motion
(d) Periodic motion.
(a) Oscillatory motion

Fill in the blanks

1. By observation we can decide whether an object is in ………….. or in state of rest.
2. The motion in a straight line is called as ………… motion.
3. Curved line can be measured with …………… .
4. The rotation of earth on its axis is………….. motion.
1. motion
2. linear
4. rotational

Question 1.
Write any two types of motion.

1. Linear motion
2. Circular motion.

Question 2.
Define circular motion.
The motion of an object on a fixed circular track is called circular motion.

Question 3.
Write name of two objects performing vibratory motion.

1. Sitar
2. Guitar

Question 4.
What is international standard of measurement ?
All countries of the world follow a standard for measurement, it is called international system of units (S.I)unit.

Question 5.
What is SI unit of length ?
Meter.

Question 6.
What is 100th part of one meter ?
Centimeter.

Question 1.
What is vibratory motion ? Which type of example is vibratory motion ?
The motion in which the object vibrates is called as vibratory motion. In vibratory motion the object repeats its motion in a certain period of time. Thus, vibratory motion is an example of periodic motion.

Question 2.
Write four examples of rotational motion.

1. The spinning top
2. Potter’s wheel
3. Rear wheel of bicycle
4. Rotating electric fan

Question 3.
What method was used in Ancient times for measurement of distance ? Was this measurement correct ?
In Ancient times, the method for measurement of distance wras foot spans and fingers. This was incorrect method, because the different sizes of foot spans and fingers etc of different persons result in inaccurate measurements.

Question 1.
(a) Define circular motion with examples,
(b) What type of motion is there in a moving cycle going in straight line ?
(a) Circular motion – The motion of an object on a circular track is called circular motion.
Examples :

1. The motion of earth around sun.
2. The motion of moon around earth.

(b) A moving cycle going in a straight line performs two types of motion

1. linear motion – when it is going on straight path.
2. Rotational motion – Due to its wheel and paddles.

Question 2.
Write name of small and big standard of measurement of distance, and give relation between them.