Solving the Motion and Time Multiple Choice Questions of Class 7 Science MCQ can be of extreme help as you will be aware of all the concepts. MCQ Questions for Class 7 Science with Answers are prepared as per the Latest Exam Pattern. These MCQ Questions on Motion and Time Class 7 with answers for a quick revision of the Chapter thereby helping you to enhance subject knowledge. 

Students can solve these Motion and Time Class 7 MCQ Questions with Answers and assess their preparation level. Class 7 Science students should refer to the following multiple-choice questions with answers for Motion and Time in standard 7. These MCQ questions with answers for Grade 7 Science will come in exams and help you to score good marks.

Practice MCQ Questions for Class 7 Science

1. A bus travels 54 km in 90 minutes. The speed of the bus is

(a) 0.6 m/s
(b) 10 m/s
(c) 5.4 m/s
(d) 3.6 m/s

2. Nearly all the clocks make use of

(a) straight line motion
(b) periodic motion
(c) random motion
(d) circular periodic motion

3. A simple pendulum takes 32s to complete 20 oscillations, what is the time period of the pendulum? 

(a) 1.6 s
(b) 2.6 s
(c) 3.6 s
(d) 4.8 s

4.  Time period of a simple pendulum depends upon its

(a) weight of bob
(b) length
(c) both (a) and (b)
(d) None of these

5. Which of the following cannot be used for measurement of time?

(a) A leaking tap
(b) Simple pendulum
(c) Shadow of an object during the day
(d) Blinking of eyes

6. On which axis is dependent variable represented?

(a) x-axis
(b) y-axis
(c) On any axis
(d) Depends on the data

7. Boojho walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 minutes. His average speed in km/h is

(a) 8.3
(b) 7.2
(c) 5
(d) 3.6

8. The most well known periodic motion is that of

(a) sundial
(b) stop watch
(c) simple pendulum
(d) sand clock

9. A particle vibrates 10 times in 1 sec. What is the time period of vibration of the particle?

(a) 10 sec
(b) 1 sec
(c) 0.1 sec
(d) 0.01 sec

10. The rate of change of displacement is called

(a) velocity
(b) Acceleration
(c) Rest
(d) Motio

11.  The speed of the vehicle is recorded by

(a) Ammeter
(b) Odometer
(c) Speedometer
(d) Voltmeter

12. The clock used now a days are:

(a) quartz
(b) minute
(c) second
(d) all of these

13. Physical quantity which we can’t obtain from a distance- time graph is

(a) speed
(b) time taken
(c) change in position
(d) Velocity

 14. A horse pulling a cart has:

(a) oscillatory motion
(b) circular motion
(c) linear motion
(d) none of these

15.  If the velocity of a body does not change with time, its acceleration is

(a) zero
(b) infinite
(c) unity
(d) None of these 

16. The distance travelled by the vehicles is recorded by

(a) monometer
(b) odometer
(c) speedometer
(d) motometer

17. The times taken by a pendulum to complete one oscillation is:

(a) oscillation period
(b) 1 second
(c) time period
(d) frequency

18. Watch used to measure short interval of time is

(a) Stop watch
(b) Pendulum watch
(c) Atom watch
(d) Quartz watch

19. If the speed of an object along a straight line keeps changing, its motion is said to be

(a) uniform motion
(b) non-uniform motion
(c) linear motion
(d) none of these

20. The time taken by a pendulum of given length to complete one oscillation is

(a) Different at different times
(b) Same at all times
(c) Increases at different times
(d) Decreases at different times

21. The to and fro motion of the particle about its mean position is called:

(a) intervals
(b) vibration
(c) pendulum
(d) can’t say

22. The distance-time graph of an object under uniform motion is a

(a) curved line
(b) straight line
(c) circle
(d) parabola

23.  The correct symbol to represent the speed of an object is:

(a) 5 m/s
(b) 5 mp
(c) 5 m/s-1
(d) 5 s/m

24. The basic unit of speed is 

(a) Km/min
(b) m/min
(c) km/h
(d) m/s  

25. An ancient Time measuring device SUNDIAL at Jantar Mantar is in

(a) Ahmedabad
(b) Bombay
(c) Jaipur
(d) Lucknow

Answer:

1. Answer: (b) 10 m/s

Explanation: Distance = 54 km

= 54 × 1000 m

Distance = 54000 m

Time = 90 minutes

 = 90 × 60

Time = 5400s

Therefore,

Distance = 54000m

Time = 5400s

Speed = Distance / Time

Speed = 54000/5400

Speed = 10 m/s

2. Answer: (d) circular periodic motion

Explanation: All the clocks around the world are manufactured to show some circular periodic motion so that the accurate type of time measurement can be featured in all the clocks.

3. Answer: (a) 1.6 s

Explanation: Time taken to complete 20 oscillations =32s

Time taken to complete 1 oscillation = 32/20s = 1.6s

Time period of a pendulum is time taken by it to complete 1 oscillation.

Time period of pendulum is 1.6 seconds.

4. Answer: (b) length

Explanation:The time period of the simple pendulum depends upon the length of the pendulum and also to some extent it depends upon the degree of the amplitude. That is the width of the pendulum's swing. In general, the time period of a pendulum means one complete cycle that is one complete left swing and right swing.

5. Answer: (d) Blinking of eyes

Explanation: Blinking of eye is not a periodic phenomenon. Eyes does not blink at a fixed interval of time. Hence Blinking of eyes cannot be used for measurement of time.

6. Answer: (b) y-axis

Explanation: The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line).

7. Answer: (b) 7.2

Explanation: Boojho Home to school to again home

From home to school distance is 3 km time taken is 30 min = (30/60) hour = 0.5 hour

And in returning from school to home time taken = 20 min = (20/60) hour = 0.33 hour

average speed = Total distance / time taken

= (3 + 3)/(0.5 + 0.33) km/h

= 7.2 km/h

8. Answer: (c) simple pendulum

Explanation: One of the most well-known periodic motions is that of a simple pendulum. A simple pendulum consists of a small metallic ball or a piece of stone suspended from a rigid stand by a thread.

9. Answer: (c) 0.1 sec

Explanation: Time period of vibration is the time taken for 1 vibration.

Given:

10 vibrations are completed in 1 sec.

1 vibration will taken only: 1/10 = 0.1 sec

10. Answer: (a) velocity

Explanation: The rate of change of displacement is called velocity.

11. Answer: (c) Speedometer

Explanation: Speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled.

12. Answer: (a) quartz

Explanation: These clocks are called quartz clocks. The time measured by quartz clocks is much more accurate than that by the clocks available earlier.

13. Answer: (d) Velocity

Explanation: Velocity is that physical quantity which can be calculated by finding the slope of a distance-time graph.

 14. Answer: (a) oscillatory motion 

Explanation: During running the hands move to and fro and as this motion gets repeated after certain time interval. Therefore it is oscillatory motion.

15.  Answer: (a) zero

Explanation: Acceleration has to do with changing how fast an object is moving. If an object is not changing its velocity, then the object is not accelerating.

16. Answer: (b) odometer

Explanation: speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled.

17. Answer: (c) time period

Explanation: Time period of a pendulum is defined the time taken by it to complete one oscillation. Time period of simple pendulum \(T=2\pi\sqrt{\frac{l}{g}}\) where l is the length of pendulum string and g is the acceleration due to gravity.

18. Answer: (a) Stop watch

Explanation: The stopwatch is used to measure short time intervals.

19. Answer: (b) non-uniform motion

Explanation: If the speed of an object moving along a straight line keeps changing, its motion is said to be non uniform motion.

20. Answer: (b) Same at all times 

Explanation: The time taken by a pendulum of a given length to complete one oscillation is same at all times. The time period of a pendulum to complete one oscillation it is dependent on the acceleration due to gravity and the length.

21. Answer: (b) vibration

Explanation: To and fro motion of a particle about mean position is called vibrational motion.

22. Answer: (b) straight line

Explanation: The distance-time graph of an object moving with a uniform speed (or constant speed) is a straight line.

23. Answer: (a) 5 m/s

Explanation: Velocity is rate of change of displacement with respect to time.

Velocity V = D/T

So, unit of velocity = m/s

24. Answer: (d) m/s  

Explanation: The unit of distance is the metre (m) and of time is second(s). Therefore the basic unit of speed is m/s.

25. Answer: (c) Jaipur

Explanation: The World's Largest Sundial in Jaipur has been telling time for almost 300 years.

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