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OTI365 - Olympiad -VII Standard
Olympiad Class VII Science - Motion and Time Sample Practice Questions

Olympiad Science - Motion and Time

Exam Duration: 45 Mins Total Questions : 30

1 )

A pendulum takes 0.5 s to make one oscillation about its mean position. How long will it take to make 5 oscillations?

(a)
5 s
(b)
7.5 s
(c)
2.5 s
(d)
10 s

2 )

Which ofthe following are NOT in uniform motion?
(i) A bullet travelling with a constant speed in a straight line
(ii) A swinging pendulum
(iii) The rotation of earth

(a)
Only (i) and (ii)
(b)
Only (ii) and (iii)
(c)
Only (i) and (iii)
(d)
(i), (ii) and iii

3 )

A truck travels 840 km using 60 litres of diesel. What is the fuel consumption of the truck?

(a)
14 km per litre
(b)
14 litre per km
(c)
140 km per litre
(d)
140 litre per km

4 )

A water pipe has water flowing through it. Which of the following changes would increase the speed of water flow through the pipe?

(a)
Increase the water pressure
(b)
Increase the length of pipe
(c)
Make the pipe coiled
(d)
Make the pipe narrower

5 )

Which of the following does NOT show oscillatory motion?

(a)
Swing
(b)
Fan
(c)
See-saw
(d)
Pendulum

6 )

A train starts from station A and reaches station D which is 150 km away. It has scheduled halts at station Band C for 5 minutes each. The distance between A and B is 50 km and C and D is 60 km. The train starts at 5 p.m. from A and reaches D at 8.30 p.m. What is its average speed in m s^-1 ?

(a)
11.88 m s^-1
(b)
15.4 m s ^-1
(c)
8.41 m s^-1
(d)
5.83 m s^-1

7 )

A man runs 10 km in 30 min. What is his speed per hour?

(a)
5 km h^-1
(b)
10 km h-1
(c)
15 km h^-1
(d)
20 km h^-1

8 )

With what speed should a car travel so that it can cover a distance of 5 km in 5 min?

(a)
1 km h^-1
(b)
5 km h^-1
(c)
12 km h^-1
(d)
60 km h^-1

9 )

A car travels with a speed of 50 km h^-1 in the 15t hour and 100 km h^-1 in the 2nd hour. What is the total distance covered by the car in the two hours?

(a)
50 km
(b)
100 km
(c)
150 km
(d)
200 km

10 )

Which of the following relations is correct?

(a)
Speed =\(\frac { 1 }{ Distance\times Time } \)
(b)
Speed =\(\frac { Time }{ Distance} \)
(c)
Speed =\(\frac { Distance }{Time } \)
(d)
Speed == Distance x Time

11 )

Which of the following is the most suitable device for measuring the time the runners take in a 100 m marathon?

(a)
Hour glass
(b)
Stop watch
(c)
Pendulum
(d)
Sun dial

12 )

In a marathon, Varun runs 800 metres in 2 minutes 40 seconds. What is his speed in metres per second?

(a)
4 m S^-1
(b)
5 m S^-1
(c)
200 m S^-1
(d)
1600 m S^-1

13 )

Which of the following shows motion in a straight line?

(a)
A bullet shot from a gun
(b)
A tree swaying
(c)
Child on a merry-go-round
(d)
The motion of strings in a guitar

14 )

A body moves on a circular track covering one complete round of 60 m in 10 seconds. Find its average speed.

(a)
3 m S^-1
(b)
6 m S^-1
(c)
36 m S^-1
(d)
600 m S ^-1

15 )

A person is seated in a train under motion. With reference to which of the following surroundings is he at rest?

(a)
Person watching him from the front seat
(b)
Person watching him from the ground
(c)
Trees on the ground
(d)
A car moving in the opposite direction to the train

16 )

Study the given distance-time graph for three cars P, Q and Rin a race.

Which of the three cars win the race?

(a)
Car P
(b)
Car Q
(c)
Car R
(d)
Both Q and R

17 )

The speed of a train is 20 m S^-1 What is the speed in km h^-1?

(a)
60 km h^-1
(b)
40 km h^-1
(c)
72 m h^-1
(d)
20 km h^-1

18 )

A spin drier spins at a rate of 600 revolutions per minute. How many revolutions would it make in 1 minute 20 seconds?

(a)
600
(b)
800
(c)
900
(d)
1000

19 )

A car covered a distance of 3 km in 5 minutes. What is the speed with which the car travelled?
(i) 100 m s^-1
(ii) 36 km h^-1
(iii) 1000 cm s^-1
(iv) 600 m min^-1

(a)
Only (i) and (ij)
(b)
Only (ij) and (iii)
(c)
Only (i), (lll) and (iv)
(d)
Only (ii), (iii) and (iv)

20 )

Study the data given below.

Duration (in hour)	0-6	6-8	8-16	16-20
Distance covered (in km)	400	0	600	200

What is the average speed of the journey for the first 20 hours?

(a)
75 km h^-1
(b)
50 km h^-1
(c)
60 km h^-1
(d)
66.67 km h^-1

21 )

Study the data given below.

Duration (in hour)	6-8	6-8
Distance covered (in km)	?	240

If the average speed of the journey is 80 km h^-1, what is the distance travelled during the first 8 hours?

(a)
640 km
(b)
240 km
(c)
400 km
(d)
480 km

22 )

In a 100 m race Revanth and Rohan ran at an average speed of 8.4 m s-1 and 12.2 m s^-1 respectively. If 12 seconds is the time taken in school records for 100 metre race, then which of the following can be true?

(a)
Revanth broke the record.
(b)
Rohan broke the record.
(c)
Both Revanth and Rohan broke the record.
(d)
Neither Revanth nor Rohan broke the record.

23 )

Swapna travelled by plane flying at an average speed of 600 km h^-1. The plane left the airport at 13:00 h and reached the destination at 15:45 h. How far did Swapna travel?

(a)
1350 km
(b)
1200 km
(c)
650 km
(d)
1800 km

24 )

Kiran and Sharan start from their home at the same time but travel by different routes to reach their school. Kiran's house is at a distance of 1500 m from school while Sharan's house is 2000 m from school. If both reach school at the same time, what can be inferred?