Motion Quiz - ICSE Class 7 Science

Free practice quiz: Motion (ICSE Class 7 Science). 44 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 7 Science practice quiz has 44 multiple-choice questions on Motion, and 44 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. A car travels from point A to point B at a constant speed of 60 km/h and returns from point B to point A at a constant speed of 40 km/h. What is the average speed of the car for the entire journey?

   1. 50 km/h
   2. 48 km/h
   3. 52 km/h
   4. 45 km/h
   Show answer

   Answer: B. 48 km/h

   Let the distance between A and B be 'd' km. Time taken to travel from A to B = d/60 hours. Time taken to travel from B to A = d/40 hours. Total distance = 2d km. Total time = (d/60) + (d/40) = (2d + 3d)/120 = 5d/120 = d/24 hours. Average speed = Total distance / Total time = 2d / (d/24) = 2d * (24/d) = 48 km/h.

2. Which of the following terms describes a change in the position of an object?

   1. Speed
   2. Velocity
   3. Displacement
   4. Time
   Show answer

   Answer: C. Displacement

   Displacement is a vector quantity that represents the change in an object's position from its initial point to its final point. Speed is the rate of change of distance, velocity is the rate of change of displacement, and time is a measure of duration.

3. A particle moves along a circular path of radius 7 meters. If it completes half a revolution, what is the distance traveled and the magnitude of displacement?

   1. Distance = 22 m, Displacement = 7 m
   2. Distance = 22 m, Displacement = 14 m
   3. Distance = 14 m, Displacement = 7 m
   4. Distance = 14 m, Displacement = 0 m
   Show answer

   Answer: B. Distance = 22 m, Displacement = 14 m

   Distance traveled in half a revolution is half the circumference of the circle: (1/2) * 2πr = πr = (22/7) * 7 m = 22 m. The displacement is the straight-line distance between the start and end points. For half a revolution on a circle, this is the diameter, which is 2r = 2 * 7 m = 14 m.

4. A cyclist travels around a circular path at a constant speed. What is true about the cyclist's motion?

   1. Velocity is constant.
   2. Acceleration is zero.
   3. Speed is changing.
   4. Velocity is changing.
   Show answer

   Answer: D. Velocity is changing.

   Although the speed is constant in uniform circular motion, the direction of motion is continuously changing. Since velocity is a vector quantity (magnitude and direction), a change in direction means a change in velocity. A changing velocity implies acceleration.

5. Which of the following is NOT an example of circular motion?

   1. The Earth revolving around the Sun
   2. A car moving on a straight road
   3. The moon revolving around the Earth
   4. The hands of a clock moving
   Show answer

   Answer: B. A car moving on a straight road

   Circular motion involves an object moving along a circular path. The Earth around the Sun, the moon around the Earth, and clock hands all exhibit circular or near-circular motion. A car on a straight road exhibits linear motion.

More questions in this quiz

Answers and explanations are in the full quiz.

1. When a body is in uniform circular motion, which of the following quantities remains constant?
2. A body is dropped from a height. If air resistance is neglected, what type of motion does it exhibit?
3. Which of the following is a scalar quantity?
4. A runner completes one full lap of a circular track with a radius of 100 meters in 50 seconds. What is the runner's displacement at the end of the lap?
5. If an object's velocity is increasing, what can be said about its acceleration?
6. Which of the following represents the slope of a velocity-time graph?
7. A ball is thrown vertically upwards with an initial velocity of 20 m/s. What will be its velocity when it reaches the maximum height, neglecting air resistance?
8. A car accelerates from 10 m/s to 30 m/s in 5 seconds. What is the acceleration of the car?
9. When an object is in motion, its distance-time graph is a straight line passing through the origin. This indicates:
10. If a body is moving with uniform acceleration, which of the following equations of motion is NOT applicable?
11. Which of the following describes a situation where the velocity of an object is constant?
12. A car travels 5 km east and then 5 km west. What is the total distance traveled and the displacement?
13. The rate of change of velocity is known as:
14. When is the average speed of an object equal to the magnitude of its average velocity?
15. Which of the following represents a scalar quantity in motion?
16. If the speed of an object remains constant, but its direction of motion changes, then:
17. Which of the following velocity-time graphs represents uniform deceleration (retardation)?
18. Which of the following units is NOT a unit of velocity?
19. A person walks 10 meters north, then 10 meters east, and finally 10 meters south. What is their final displacement from the starting point?
20. When an object is moving with uniform velocity, its speed-time graph is:
21. A car travels at 20 m/s for 10 seconds, then at 30 m/s for another 10 seconds. What is the total distance covered?
22. If an object is accelerating, what does it mean about its velocity?
23. Which of the following describes the motion of a freely falling object under gravity, neglecting air resistance?
24. What does the area under a velocity-time graph represent?
25. A body moves from point A to point B and then returns to point A. What is the displacement for the entire journey?
26. Which quantity describes how fast an object is moving and in what direction?
27. A car starts from rest and accelerates uniformly at 3 m/s² for 5 seconds. What distance does it cover in this time?
28. If the distance-time graph is a horizontal line, it means the object is:
29. Which of the following pairs correctly represents a scalar and a vector quantity?
30. A ball is thrown upwards and returns to the ground. During the upward journey, its acceleration is:
31. The SI unit of displacement is:
32. Which of the following statements is true regarding acceleration?
33. If an object is moving with constant positive acceleration, its velocity-time graph will be:
34. Which of the following is a vector quantity?
35. A body is dropped from a height. If air resistance is neglected, what is the nature of its acceleration?
36. If an object travels a distance of 100 meters in 10 seconds, and then another 100 meters in 5 seconds, what is its average speed for the entire journey?
37. Which term describes the total length of the path traveled by an object?
38. A car is moving with a velocity of 15 m/s. If the driver applies the brakes and the car stops in 10 seconds, what is the acceleration?
39. In uniform circular motion, the acceleration is always directed:

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