Students can solve these Class 7 Science MCQ and Class 7 Science Chapter 8 Measurement of Time and Motion MCQ Questions Online Test with Answers to assess their preparation level.
Class 7 Measurement of Time and Motion MCQ with Answers
MCQ on Measurement of Time and Motion Class 7
Class 7 Science Chapter 8 Measurement of Time and Motion MCQ Questions with Answers
Question 1.
Which of these actions is an example of circular motion?
(a) A child riding a see-saw
(b) A child pumping air in a tyre
(c) A player bowling a cricket ball
(d) A player serving a tennis ball with racket
Answer:
(c) A player bowling a cricket ball
Question 2.
The maximum speed of a car is 180 km/h. What is the maximum speed (in m/s)?
(a) 20
(b) 30
(c) 50
(d) 60
Answer:
(c) 50
Question 3.
What is the relation between distance and speed?
(a) Distance = Speed x Time
(b) Distance = Speed/Time
(c) Distance = Time/Speed
(d) None of these
Answer:
(a) Distance = Speed x Time
Question 4.
How will you convert the speed given in km/h to m/s?
(a) By multiplying with 5/16
(b) By multiplying with 6/5
(c) By multiplying with 18/5
(d) By multiplying with 5/18
Answer:
(d) By multiplying with 5/18
Question 5.
If we denote speed by S, distance by D and time by T, then the relationship between these quantities is
(a) S = D × T
(b) T = \(\frac{s}{d}\)
(c) T = \(\frac{1}{T}\) x D
(d) S = \(\frac{T}{D}\)
Answer:
(c) T = \(\frac{1}{T}\) x D
Question 6.
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
Answer:
(a) 5 m/s
Question 7.
Boojho walks to his school which is at a distance of 3 km from his home in 30 min. On reaching, he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 min. His average speed in km/h is
(a) 8.3
(b) 7.2
(c) 5
(d) 3.6
Answer:
(b) 7.2
Question 8.
A bus travels 54 km in 90 min. 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
Answer:
(b) 10 m/s
Question 9.
Two clocks A and B are shown in figures. Clock A has an hour and a minute hand whereas clock B has an hour hand, a minute hand as well as a second hand. Which of the following statements is correct for these clocks?
(a) A time interval of 30s can be measured by clock A.
(b) A time interval of 30s cannot be measured by clock B.
(c) Time interval of 5 min can be measured by both A and B.
(d) Time interval of 4 min 10s can be measured by clock A.
Answer:
(c) Time interval of 5 min can be measured by both A and B.
Question 10.
Which of the following cannot be used for the measurement of time?
(a) A leaking tap
(b) Simple pendulum
(c) Shadow of an object during the day
(d) Blinking of eyes
Answer:
(d) Blinking of eyes
Question 11.
Figure shows an oscillating pendulum
Time taken by the bob to move from A to C is t1 and from C to 0 is t2. The time period of this simple pendulum is
(a) (t1 + t2)
(b) 2 (t1 + t2)
(c) 3(t1 + t2)
(d) 4(t1 + t2)
Answer:
(d) 4(t1 + t2)
Question 12.
The diagram shows a pendulum in periodic motion. The time period of a pendulum is the time taken by the bob to make one complete oscillation.
What would be the movement of the bob for one complete oscillation of the pendulum?
(a) C to B
(b) C to A
(c) B to C to A
(d) B to C to B
Answer:
(d) B to C to B
Question 13.
Which one records the distance travelled by a vehicle?
(a) Speedometer
(b) Manometer
(c) Motometer
(d) Odometer
Answer:
(d) Odometer
Question 14.
The standard unit of speed is
(a) km/mm
(b) km/s
(c) m/s
(d) None of these
Answer:
(c) m/s
Question 15.
The device which is used to measure speed is
(a) odometer
(b) speedometer
(C) pendulum
(d) Both (a) and (b)
Answer:
(b) speedometer
Question 16.
The distance moved by an object can be measured by
(a) speedometer
(b) odometer
(C) Both (a) and (b)
(d) None of these
Answer:
(b) odometer
Question 17.
Time period of a pendulum is expressed in
(a) hour
(b) minute
(C) second
(d) All of these
Answer:
(d) All of these
Measurement of Time and Motion Class 7 Assertion-Reason Type Questions
I. The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 1.
Assertion (A) A stopwatch is a more precise instrument for measuring time than a wall clock.
Reason (R) A stopwatch can measure time in minutes only.
Answer:
(c) A stopwatch can measure time more precisely, often in seconds or even fractions of a second, unlike a wall clock.
Question 2.
Assertion (A) A simple pendulum is an example of non-periodic motion.
Reason (R) A simple pendulum does to-and-fro motion which is known as oscillatory motion.
Answer:
(d) A simple pendulum is an example of periodic motion.
Question 3.
Assertion (A) Speedometer is a device used to measure the speed of vehicle.
Reason (R) Speed is the total time taken divided by total distance covered by an object.
Answer:
(c) Speed is the total distance covered divided by total time taken by an object and it is measured by speedometer.
Question 4.
Assertion (A) Speed of a vehicle in traffic jam is uniform.
Reason (R) When an object moves with constant speed, then its speed is uniform.
Answer:
(d) Speed of a vehicle in traffic jam is non-uniform because it does not move with constant speed.
II. The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by
selecting the appropriate option given below
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 10.
Assertion (A) The time taken by a pendulum to complete one oscillation is called its time period.
Reason (R) Time period of a simple pendulum does not depend upon the length of pendulum.
Answer:
(c) A is true but R is false.
Question 11.
Assertion (A) The distance covered by an object in unit time is called its speed.
Reason (R) Faster vehicles take less time to cover a certain distance as compared to slower vehicle.
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Measurement of Time and Motion Class 7 Fill in the blanks
Question 1.
Time between one sunrise and the next sunrise is called a _______
Answer:
day
Question 2.
In a simple pendulum, the metallic ball suspended by thread is called its _______
Answer:
bob
Question 3.
Time period of a pendulum depends on its _______
Answer:
length
Question 4.
The instrument used to measure the speed of a vehicle is called a _______
Answer:
speedometer
Question 5.
If a train covers 150 km in 3 hours and then 100 km in the next 2 hours, its motion is _______
Answer:
Uniform motion
Question 5.
To-and-fro motion of pendulum is an example of _______ motion.
Question 6.
_______ is a device used to measure the distance of a vehicle.
Measurement of Time and Motion Class 7 True or False
Question 1.
Periodic events are used for the measurement of time.
Answer:
True
Question 2.
The smallest time interval that can be measured with commonly available clocks and watches is one second.
Answer:
True
Question 3.
The time period of simple pendulum is not constant.
Answer:
True
Question 4.
The basic unit of speed is km/h.
Answer:
False
Question 5.
Faster vehicle has a higher speed.
Answer:
True
Question 7.
The basic unit of speed is km/s.
Answer:
False
Question 8.
Speedometer is used to measure the distance travelled by an object.
Answer:
False
Question 9.
The odometer in a vehicle indicates the instantaneous speed at which the vehicle is moving.
Answer:
False
Measurement of Time and Motion Class 7 Case Based Questions
Question 1.
Sunil was a businessman. He lived in Pune. One day he had an official meeting in Bombay. The cab driver asked Sunil to come to the nearest pick-up point at 8:00 A.M. When Sunil seated in the cab, he noticed that the odometer of the cab read 14000 km. He reached to Bombay is 5 h. At the end of the trip, he checked that the odometer read 14500 km.
(i) Odometer is used to measure the
(a) total distance
(b) total time
(c) total speed
(d) Both (a) and (b)
Answer:
(a) total distance
(ii) A vehicle moves on a busy road is an example of
(a) periodic motion
(b) circulatory motion,
(c) uniform motion
(d) non-uniform motion
Answer:
(d) non-uniform motion
(iii) What was the speed of cab in this journey?
(a) 100 km/h
(b) 150 km/h
(c) 140 km/h
(d) 50 km/h
Answer:
(iii) (a) Distance travelled = 14500-14000 = 500 km
Time taken = 5n
Speed = \(\frac{\text { Total distance }}{\text { Total time }}\) = \(\frac{500}{5}\) = 100 km/h
Measurement of Time and Motion Class 7 Match the following
Question 1.
Match the Column I with Column II.
| Column I | Column II |
| (a) Years | (i) Rotation period of the earth on its axis |
| (b) Hour | (ii) Time to complete 100 m race |
| (c) Days | (iii) Gestation period in humans |
| (d) Second | (iv) Age of a person |
| (e) Month | (v) Train reaches from one city to other |
Answer:
| Column I | Column II |
| (a) Years | (iv) Age of a person |
| (b) Hour | (v) Train reaches from one city to other |
| (c) Days | (i) Rotation period of the earth on its axis |
| (d) Second | (ii) Time to complete 100 m race |
| (e) Month | (iii) Gestation period in humans |