Class 7 Science Chapter 13 MCQ (Multiple Choice Questions) of Motion and Time updated for new academic session 2022-2023. 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 13 of class 7 science. Practice these questions for not only to score good marks but to understand the concepts also.

Class 7 Science Chapter 13 MCQ for 2022-2023

Class: 7Science
Chapter: 13Motion 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

Payel is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payel wants to take help from you:

[A]. When an object moves along a straight-line path, it is called rectilinear motion.
[B]. When an object moves along a circular path, it is called circular motion.
[C]. When an object turns or spins about a fixed axis, it is called rotational motion.
[D]. The motion which repeats itself after regular intervals of time, is called oscillatory motion.
Q4

Read the following sentences carefully, and choose the incorrect one:

[A]. The distance moved by an object in a unit time is called speed of the object.
[B]. A slow-moving object is said to have a low speed.
[C]. A fast-moving object is said to have high speed.
[D]. None of the above
Q5

Recently, in a science class test, you are asked a question where you have to say whether the statements are incorrect?

[A]. When the distance travelled is measured in meters and the time taken is measured in seconds then the speed will come in the unit of meters per second.
[B]. When the distance travelled is measured in meters and the time taken is measured in minutes then the speed will come in the unit of meters per minute.
[C]. When the distance is measured in centimeters and the time is measured in seconds then the speed will come in the unit of centimeters per second.
[D]. None of the above
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 simple pendulum takes 32 s to complete 20 oscillations. What is the time-period of this pendulum?

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

Which of the following statement is or are incorrect?

[A]. An object moving along a straight-line path is said to have uniform motion if its speed remains constant.
[B]. An object moves moving along a straight-line path is said to have non uniform motion if its speed keeps changing.
[C]. The non-uniform motion (in which the speed of an object keeps changing) is also called accelerated motion.
[D]. None of the above
Q9

A sprinter or a fast runner attains a maximum speed of 10 meter per second. What we will be his speed in kilometer per hour?

[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

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
Q14

The instrument installed in a car for measuring the distance travelled by the car is called.

[A]. Barometer
[B]. Speedometer
[C]. Anemometer
[D]. Odometer
Q15

The composition of air can be best represented by drawing a

[A]. Pie chart
[B]. Bar graph
[C]. Line graph
[D]. Histogram
Q16

Which of the following could not be a unit of speed?

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

The basic unit of speed is:

[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
[B]. Quadric crystals
[C]. Chrome crystals
[D]. Quartz crystals
Q19

Which among the following is the smallest unit of time?

[A]. Second
[B]. Millisecond
[C]. Nanosecond
[D]. Microsecond
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

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
Q22

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
Q23

Which of the following is the most appropriate unit for expressing the speed of a snail?

[A]. km/s
[B]. m/s
[C]. cm/s
[D]. mm/s
Q24

Which of the following should be drawn to show the variation of the weight of a man with age?

[A]. Bar graph
[B]. Pie chart
[C]. Line graph
[D]. Histogram
Q25

A man riding a scooter travels a distance of 70 meters in 20 seconds. What is the speed of the scooter?

[A]. 2.5 m/s
[B]. 3.5 m/s
[C]. 4.5 m/s
[D]. 50 m/s

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