## Class 7 Science Objective Chapter – 13 Motion and Time

Here we are providing Class 7 Science Objective Chapter – 13 Motion and Time because its very important for Class 7 students as we all know that every board exam question has MCQs so that students should practice these questions so that students can get good marks in board. Class 7 Science Objective Chapter – 13 Motion and Time is an extremely important and its also a year in which students learn the fundamentals of concepts that help them lay a solid foundation for their higher education. Here we are providing in Class Class 7 Science Objective Chapter – 13 Motion and Time 100+ questions  so that students practice more and more. If you want class wise Notes Then Click Here

Class 7 Science Objective Chapter – 13 Motion and Time

1.The speed of a car is 40 km/h. What is time taken to reach from one city to another city if the distance between the two cities is 480 km:

( A ) 10 hours

( B ) 11 hours

( C ) 14 hours

( D ) 12 hours

Ans – ( D )

2.The distance travelled by the vehicles is recorded by

( A ) monometer

( B ) odometer

( C ) speedometer

( D ) motometer

Ans – ( B )

3.72 km/h m/s:

( A ) 72 m/s

( B ) 20 m/s

( C ) 36 m/s

( D ) 12 m/s

Ans – ( B )

4.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

Ans – ( B )

5.The standard unit of time is:

( A ) hour

( B ) minute

( C ) second

( D ) all of these

Ans – ( C )

6.The clocks and watches which are used for measuring time are based on

( A ) rectilinear motion

( B ) circular motion

( C ) periodic motion

( D ) rotational motion

Ans – ( C )

7.The clock used now a days are:

( A ) quartz

( B ) minute

( C ) second

( D ) all of these

Ans – ( A )

8.The device which is used for measuring time intervals in sports activities is called

( A ) wrist watch

( B ) stop watch

( C ) stop clock

( D ) quartz watch

Ans – ( B )

9.When weight of bob in a pendulum is increased then the oscillation period of a pendulum is:

( A ) increased

( B ) decreased

( C ) no change

( D ) can’t say

Ans – ( B )

10.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

Ans – ( B )

11.The standard unit of length is:

( A ) metre (‘m’)

( B ) kilometre

( C ) m/s

( D ) km/h

Ans – ( A )

12.The most well known periodic motion is that of

( A ) sundial

( B ) stop watch

( C ) simple pendulum

( D ) sand clock

Ans – ( C )

13.The standard unit of mass is:

( A ) ‘kg’

( B ) mg

( C ) g

( D ) none of these

Ans – ( A )

14.Which of the following is based on the study of the shadow cast by the sun?

( A ) Simple pendulum

( B ) Atomic clock

( C ) Sun dial

( D ) Quartz clock

Ans – ( C )

15.The standard unit of temperature is:

( A ) ‘Kg’

( B ) F

( C ) °C

( D ) can’t say

Ans – ( A )

16.The most appropriate unit for expressing the speed of a space rocket is

( A ) m/s

( B ) km/s

( C ) km/h

( D ) km/min

Ans – ( B )

17.Distance:

( A ) D = S x T

( B ) D = Ts

( C ) D = sT

( D ) D = 1T×S

Ans – ( A )

18.Swami walks to his school which is at a distance of 4 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back in his friend’s vehicle to home in 10 minutes. His average speed in km/h is

( A ) 8 km/h

( B ) 24 km/h

( C ) 16 km/h

( D ) 20 km/h

Ans – ( C )

19.Time:

( A ) t = d x s

( B ) t = sd

( C ) t = ds

( D ) t = 1s×d

Ans – ( A )

20.The distance moved by the object in a unit time is:

( A ) time

( B ) distance

( C ) speed

( D ) can’t say

Ans – ( C )

21.When an object changes position with time, it is said to be in

( A ) rest

( B ) stationary

( C ) circle

( D ) motion

Ans – ( D )

22.The pictorial representation of two variables inter dependent of one another is known as:

( A ) motion

( B ) graph

( C ) speed

( D ) time

Ans – ( B )

23.A motion in a straight line in a fixed direction represents a

( A ) circular motion

( B ) uniform motion

( C ) non-uniform motion

( D ) periodic motion

Ans – ( B )

24.If an object covers equal distance in equal intervals of time, then the object is said to have:

( A ) non-uniform motion

( B ) uniform motion

( C ) oscillation

( D ) none of these

Ans – ( B )

25.A simple pendulum executes a

( A ) periodic motion

( B ) oscillatory motion

( C ) both ( A ) and (b)

( D ) none of these

Ans – ( C )

26.A device used to measure the speed of vehicles is:

( A ) odometer

( B ) graph

( C ) speedometer

( D ) none of these

Ans – ( C )

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

( A ) curved line

( B ) straight line

( C ) circle

( D ) parabola

Ans – ( B )

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

( A ) intervals

( B ) vibration

( C ) pendulum

( D ) can’t say

Ans – ( B )

29.The S.I unit of speed is

( A ) m/s

( B ) km/h

( C ) m/h

( D ) km/s

Ans – ( A )

30.The most common example of periodic motion or oscillatory motion is:

( A ) interval

( B ) pendulum

( C ) simple pendulum

( D ) speedometer

Ans – ( C )

31.Which of the following measures the most accurate time?

( A ) Sand clock

( B ) Water clock

( C ) Quartz clock

( D ) Sundial

Ans – ( C )

32.The time interval between one sunrise and next sunrise is called a:

( A ) year

( B ) month

( C ) day

( D ) week

Ans – ( C )

33.All oscillatory motions are

( A ) rotatory motions

( B ) rectilinear motions

( C ) circular motions

( D ) periodic motions

Ans – ( D )

34.Which of the following motion is circular motion:

( A ) motion of a child over see saw

( B ) motion of a car running on a straight road

( C ) motion of an electric bell hammer

( D ) motion of a child in a merry go round

Ans – ( D )

35.The motion of the moon around the earth represents a

( A ) periodic motion

( B ) oscillatory motion

( C ) curvilinear motion

( D ) none of these

Ans – ( A )

36.A simple pendulum takes 32 S complete 20 oscillations. What is the time period of pendulum:

( A ) 640

( B ) 0.625

( C ) 1.60

( D ) none of these

Ans – ( B )

37.Which of the following is the S.I unit of distance?

( A ) km

( B ) m

( C ) cm

( D ) mm

Ans – ( B )

38.Distance between two cities is measured in:

( A ) metres

( B ) kilometres

( C ) second

( D ) kilogram

Ans – ( B )

39.The motion of the spikes in the wheels of a moving cycle is

( A ) rectilinear motion

( B ) circular motion

( C ) oscillatory motion

( D ) none of these

Ans – ( B )

40.Motion of a train on a straight

( A ) oscillatory motion

( B ) circular motion

( C ) uniform motion

( D ) straight line motion

Ans – ( D )

41.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

Ans – ( B )

42.A device used to measure the distance moved by a vehicle:

( A ) odometer

( B ) speedometer

( C ) both

( D ) none of these

Ans – ( A )

43.If we denote speed by S, distance by D and time by T, the relationship between these quantities is

( A ) S = D T

( B ) T = S/D

( C ) S = 1/T × D

( D ) S = T/D

Ans – ( C )

44.The time taken by the earth to make one revolution around the sun is called a:

( A ) day

( B ) week

( C ) month

( D ) year

Ans – ( D )

45.Nearly all the clocks make use of

( A ) straight line motion

( B ) periodic motion

( C ) random motion

( D ) circular motion

Ans – ( B )

46.The motion of a vibrating particle from one extreme position to another extreme position about its mean position is:

( A ) speed

( B ) circulation

( C ) oscillation

( D ) none of these

Ans – ( C )

47.A simple pendulum takes 42 sec. to complete 20 oscillations. What is its time period?

( A ) 2.1 s

( B ) 4.2 s

( C ) 21 s

( D ) 8.40 s

Ans – ( A )

48.The time taken by a vibrating body to complete one vibration is:

( A ) speed

( B ) time of period

( C ) distance

( D ) all of these

Ans – ( B )

49.Time period of a simple pendulum depends upon its

( A ) weight of bob

( B ) length

( C ) both ( A ) and (b)

( D ) None of these

Ans – ( B )

50.A horse pulling a cart has:

( A ) oscillatory motion

( B ) circular motion

( C ) linear motion

( D ) none of these

Ans – ( A )

51.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

Ans – ( D )

52.If the speed of a body moving in a straight line changes then the speed of the body is:

( A ) uniform

( B ) non-uniform

( C ) some times uniform and non-uniform

( D ) none of these

Ans – ( B )

53.On which axis is dependent variable represented?

( A ) x-axis

( B ) y-axis

( C ) On any axis

( D ) Depends on the data

Ans – ( B )

54.An earth completes one revolution around the sun in:

( A ) 1 day

( B ) 1 year

( C ) 1 hour

( D ) none of these

Ans – ( B )

55.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

Ans – ( D )

56.A simple pendulum is an example of:

( A ) periodic motion

( B ) circular motion

( C ) linear motion

( D ) none of these

Ans – ( A )

57.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

Ans – ( B )

58.An odometer is used to measure:

( A ) speed

( B ) distance

( C ) motion

( D ) none of these

Ans – ( B )

59. If a pendulum is vibrating at 10 Cycles−1, its time period is

( A ) 1 sec

( B ) 0.1 sec

( C ) 0.5 sec

( D ) 0.01 sec

Ans – ( B )

60.The hammer of an electric bell has motion:

( A ) circular motion

( B ) vibratory motion

( C ) linear motion

( D ) periodic motion

Ans – ( B )

61. The speed of a car is 40 km/h. What is time taken to reach from one city to another city if the distance between the two cities is 480 km:

( A ) 10 hours

( B ) 11 hours

( C ) 14 hours

( D ) 12 hours

Ans – ( D )

62.The unit of speed of train is:

( A ) meter per hour

( B ) meter per second

( C ) kilometer per hour

( D ) mile per second

Ans – ( A )

63. 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

Ans – ( B )

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

( A ) oscillation period

( B ) 1 second

( C ) time period

( D ) frequency

Ans – ( C )