 Class 7 Science Chapter 9 MCQ (Multiple Choice Questions) of Motion and Time updated for new academic session 2023-24. As all knows that MCQs are now an important part of question papers recommended by CBSE. That is why, we have prepared the MCQ based on all the topic of the chapter 9 of class 7 science. Practice these questions for not only to score good marks but to understand the concepts also.

## Class 7 Science Chapter 9 MCQ for 2023-24

 Class: 7 Science Chapter: 13 Motion and Time Contents: MCQ with answers and Explanation

### MCQ Tests with Answers for Class 7 Science Chapter 13

Q1

#### Consider the following statements and choose the incorrect one:

[A]. The symbols of all units are written in singular.
[B]. Shadow of an object is shortest at noon.
[C]. Roman used sand clocks to measure time.
[D]. A nanosecond is one-millionth of a second.
Q2

#### Which of the following statement is or are incorrect?

[A]. The movement of an objects is called stationary-motion.
[B]. The movement or duration in which things occurs is called time.
[C]. An object is said to be in motion or moving when its positions changes with time.
[D]. When the position of car changes with, we say that car is moving or that the car is in motion.
Q3

[A]. 0.6 m/s
[B]. 10 m/s [C]
[C]. 5.4 m/s
[D]. 3.6 m/s
Q4

#### In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were correct? Will you be able to answer this question?

[A]. The unit of speed depends upon the unit of distance and the unit of time used.
[B]. The speed of an object can be calculated by dividing the “distance travelled” by the object, by the “time taken” to travel this distance.
[C]. The “distance traveled” divided by “time taken” actually gives us “average speed” of the car during that time.
[D]. All the above
Q5

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

[A]. S = D x T
[B]. T = S/D
[C]. S = 1 x D/ T
[D]. S = T/D
Q6

#### In a science quiz competition, Payel are asked a question where she had to choose the statement which was/were correct?

[A]. If we have to compare the speeds of a number of objects, then we must express the speed of all those objects in the same units.
[B]. An instrument on a vehicle dashboard which indicates the speed of the vehicle when it is running is called speedometer.
[C]. An odometer it is an instrument for measuring the distance travelled by a vehicle.
[D]. All the above
Q7

[A]. 1.6 s
[B]. 2.6 s
[C]. 3.6 s
[D]. 4.8 s
Q8

#### In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?

[A]. The variation of distance travelled by an object with time can be seen more easily from a distance time graph than table form.
[B]. A bar graph is a diagram which shows information as bars of different heights.
[C]. A pie chart is a kind of graph or diagram which shows the percentage composition of something in the form of slices of a circle.
[D]. None of the above
Q9

[A]. 36 km/h
[B]. 46 km/h
[C]. 76 km/h
[D]. 60 km/h
Q10

#### Consider the following statements and choose the correct one:

[A]. Time is a moment or duration in which things occur.
[B]. In ancient times, people used some natural events which repeated regularly after fixed time, intervals to measure time.
[C]. A sundial measures time by the position of the shadow cast by the sun.
[D]. All the above
Q11

#### Puja is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:

[A]. The principle of periodic motion is used for the measurement of time.
[B]. Clocks and watches which are used for measuring time are based on the principle of periodic motion.
[C]. The to-and-fro motion of a simple pendulum is an example of periodic motion or oscillatory motion.
[D]. All the above
Q12

#### In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. Very accurate measurement of time is now possible by using quartz clocks and watches.
[B]. The smallest time interval that can be measured with commonly available clocks and watches is 1 second.
[C]. The clocks and watches used in sports meets can measure time intervals that are one-tenth of a second or one-hundredth of a second.
[D]. None of the above
Q13

#### 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
Q14

#### Falcon is a bird which flies with a maximum speed of 320 km per hour. Calculate its speed in meter per second:

[A]. 118.8 m/s
[B]. 98.8 m/s
[C]. 60 m/s
[D]. None of the above
Q15

[A]. Barometer
[B]. Speedometer
[C]. Anemometer
[D]. Odometer
Q16

[A]. km/h
[B]. s/m
[C]. m/s
[D]. mm/s
Q17

[A]. km/min
[B]. m/min
[C]. km/h
[D]. m/s
Q18

#### The regular vibration of which of the following electrically driven crystals are used for measuring time very accurately.

[A]. Calcite crystals
[C]. Chrome crystals
[D]. Quartz crystals
Q19

[A]. 1000 m
[B]. 2000 m
[C]. 1500 m
[D]. 1800 m
Q20

#### A student draws a distance time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about the section of the graph?

[A]. The scooter has uniform speed in this section
[B]. The distance travelled by scooter is the maximum in the section
[C]. The distance travelled by the scooter is the minimum in the section
[D]. The distance travelled by the scooter is zero in the section
Q21

[A]. Time graph
[B]. Bar graph
[C]. Pie chart
[D]. Line graph
Q22

#### 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
Q23

#### The train “A” travelled a distance of 150 km in 3 hours whereas another train “B” travelled a distance of 180 km in 4 hours. Which train travelled faster?

[A]. Train A
[B]. Train B
[C]. Both have same speed
[D]. Not to be calculated
Q24

[A]. km/s
[B]. m/s
[C]. cm/s
[D]. mm/s
Q25

#### When the amplitude of vibration of a simple pendulum is increased, then its time period:

[A]. Decreases
[B]. Increases
[C]. Remains the same
[D]. First increases and then decreases
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Last Edited: June 13, 2023