# MCQ Questions for Class 7 Science Chapter 13 Motion and Time with Answers

We have compiled the NCERT MCQ Questions for Class 7 Science Chapter 13 Motion and Time with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 7 Science with Answers on a daily basis and score well in exams. Refer to the Motion and Time Class 7 MCQs Questions with Answers here along with a detailed explanation.

## Motion and Time Class 7 MCQs Questions with Answers

Choose the correct option.

Question 1.
The formula for distance is
(a) distance = $$\frac {time}{speed}$$
(b) distance = $$\frac {speed}{time}$$
(c) distance = $$\frac {1}{speed}$$ x time
(d) distance = speed × time

Answer: (d) distance = speed × time

Question 2.
The distance travelled by the vehicles is recorded by
(a) monometer
(b) odometer
(c) speedometer
(d) motometer

Question 3.
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

Question 4.
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

Question 5.
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

Question 6.
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

Question 7.
The most well known periodic motion is that of
(a) sundial
(b) stop watch
(c) simple pendulum
(d) sand clock

Question 8.
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

Question 9.
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

Question 10.
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

Question 11.
When an object changes position with time, it is said to be in
(a) rest
(b) stationary
(c) circle
(d) motion

Question 12.
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

Question 13.
A simple pendulum executes a
(a) periodic motion
(b) oscillatory motion
(c) both (a) and (b)
(d) none of these

Answer: (c) both (a) and (b)

Question 14.
The distance-time graph of an object under uniform motion is a
(a) curved line
(b) straight line
(c) circle
(d) parabola

Question 15.
The S.I unit of speed is
(a) m/s
(b) km/h
(c) m/h
(d) km/s

Question 16.
Which of the following measures the most accurate time?
(a) Sand clock
(b) Water clock
(c) Quartz clock
(d) Sundial

Question 17.
All oscillatory motions are
(a) rotatory motions
(b) rectilinear motions
(c) circular motions
(d) periodic motions

Question 18.
The motion of the moon around the earth represents a
(a) periodic motion
(b) oscillatory motion
(c) curvilinear motion
(d) none of these

Question 19.
Which of the following is the S.I unit of distance?
(a) km
(b) m
(c) cm
(d) mm

Question 20.
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

Fill in the blanks with suitable words.

Question 1.
The time taken by the pendulum to complete one oscillation is called its ………………

Question 2.
……………… is the SI unit of time.

Question 3.
The distance moved by an object in a unit time is called its ………………

Question 4.
Speed of the vehicle is shown by the instrument ……………… fitted on the vehicle.

Question 5.
Distance time-graph representing a non-uniform motion of an object is of ……………… shape.

Question 6.
The distance-time graph for the motion of an object moving with a constant speed is a ………………

Question 7.
SI unit of speed is ………………

Question 8.
Motion of objects can be presented in a pictorial form by their ……………… graph.

Question 9.
If an object covers 4 km in 4 minutes its speed is ……………… m/s and ……………… km/h.

Question 10.
In a simple pendulum, the metallic ball suspended by thread is called its ………………

Question 11.
The metallic ball of the pendulum is called the ……………………..

Question 12.
The distance-time graph for the motion of an object moving with a constant speed is a …………………….. line.

Question 13.
The S.I unit of speed is ……………………..

Question 14.
The symbols of all units are written in ……………………..

Question 15.
The time period of a pendulum depend on its ……………………..

Question 16.
Hands of a clock represent …………………….. motion.

Question 17.
Nowadays, clocks use …………………….. crystals to measure time.

True or False

Question 1.
Each and every object in this universe moves with a constant speed.

Question 2.
The motion of a spinning top is rotational motion.

Question 3.
The motion of earth around the sun is called rectilinear motion.

Question 4.
The smallest time interval which can be measured with commonly available clocks and watches is one second.

Question 5.
A sundial measures time by the position of the shadow cast by the sun.

Question 6.
Vehicles which covers more distance in small interval of time have slow speed.

Question 7.
Periodic motion is used to measure time.

Question 8.
The symbols of all units are written in singular.

Question 9.
All clocks make use of some periodic motion.

Question 10.
The basic unit of speed is km/min.

Question 11.
Rectilinear motion is a straight line motion.

Question 12.
Odometer measures the speed of a vehicle.

Question 13.
All oscillatory motions are periodic motions.

Question 14.
Distance-time graph for non-uniform motion is a straight line.

Question 15.
The speed of a train is expressed in m/h.

Question 16.
Clocks that measure very small time intervals are used for scientific research.

Question 17.
Second is the smallest unit of time.

Match the Following

 Column I Column II 1. Delhi (a) Shadow cast by sun 2. Sundial (b) Measuring distance 3. Quartz clock (c) m/s 4. Simple pendulum (d) Motion 5. Circular motion (e) Used for measuring speed 6. Odometer (f) Jantar Mantar 7. Soldiers in a march past (g) Linear motion 8. Unit of speed (h) Use electronic circuit 9. Speedometer (i) Earth 10. Change in position of body with respect to time (j) Periodic motion