This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 9 Motion And Time – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 9 Motion And Time Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Who discovered that the time period of a simple pendulum is constant A) William Harvey. B) Aristotle. C) Galileo Galilee. D) Hans Christian Oerested. Show Answer Correct Answer: C) Galileo Galilee. 2. To measure speed, you need to know ..... A) Distance covered and speed. B) Distance covered and time it took. C) Acceleration and distance. D) Direction and time. Show Answer Correct Answer: B) Distance covered and time it took. 3. The time taken by the earth to complete one revolution around the sun: A) Day. B) Hour. C) Month. D) Year. Show Answer Correct Answer: D) Year. 4. Circular motion A) Children swinging on sea-saw. B) Child on merry go round. C) Child running a race. D) No answer. Show Answer Correct Answer: B) Child on merry go round. 5. Speed = distance * time A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 6. The instrument in a car is used for measuring the distance travelled by car is A) Speedometer. B) Barometer. C) Anemometer. D) Odometer. Show Answer Correct Answer: D) Odometer. 7. How does acceleration differ from speed? A) Acceleration is the same as speed. B) Speed measures the distance traveled over time. C) Acceleration is a measure of an object's mass. D) Acceleration differs from speed in that speed measures how fast an object moves, while acceleration measures how quickly the object's speed changes. Show Answer Correct Answer: D) Acceleration differs from speed in that speed measures how fast an object moves, while acceleration measures how quickly the object's speed changes. 8. If distance and time is given, what is the object's speed? A) Distance = Speed/Time. B) Time = Speed/Distance. C) Speed = km/seconds. D) Energy = Speed/Distance/Time. Show Answer Correct Answer: C) Speed = km/seconds. 9. What is the basic unit of time? A) Second. B) Hour. C) Day. D) Minute. Show Answer Correct Answer: A) Second. 10. If a bus moves with a speed of 40 km/h and covers a distance of 240 km, how much time would it take to cover this distance? A) 2 hours. B) 4 hours. C) 6 hours. D) 8 hours. Show Answer Correct Answer: C) 6 hours. 11. Which one of the following is a time measuring device: A) Sundial. B) Odometer. C) Speedometer. D) Barometer. Show Answer Correct Answer: A) Sundial. 12. Ram's car moves at a speed of 22km/h. He has to cover 154km in 4 hours.If he moves at a constant speed, how much distance would he have covered in 4 hours? A) He would be able to cover the whole distance in 4 hours. B) 88km. C) 73. D) 100km. Show Answer Correct Answer: B) 88km. 13. Which one of the following is stored in a camel's hump for use in emergency situations? A) Air. B) Fat. C) Water. D) Carbohydrates. Show Answer Correct Answer: B) Fat. 14. The sundial is a device for measuring A) Speed. B) Distance. C) Time. D) Height. Show Answer Correct Answer: C) Time. 15. A bus travels 54 m in 90 s. The speed of the bus is ..... m/s A) 0.6. B) 10. C) 5.4. D) 3.6. Show Answer Correct Answer: A) 0.6. 16. SI is the abbreviation of A) Standard Time. B) System Time. C) Systeme Internatinal d' Unites. D) Ssteme Interntinal d' Units. Show Answer Correct Answer: C) Systeme Internatinal d' Unites. 17. Correct cause soil erosion A) Cutting down of forests. B) Overgrazing of cattle. C) Planting of trees. D) Both A and B. Show Answer Correct Answer: D) Both A and B. 18. Periodic motion of a pendulum has been used to make ..... and ..... A) Distance. B) Odometer. C) Speedometer. D) Clock, watches. Show Answer Correct Answer: D) Clock, watches. 19. What is the term used for ' distance covered by a body in unit time?' A) Uniform motion. B) Non uniform motion. C) All the above. D) None of the above. Show Answer Correct Answer: A) Uniform motion. 20. The instrument used to measure distance travelled by a vehicle is A) Odometer. B) Speedometer. C) Ammeter. D) Voltmeter. Show Answer Correct Answer: A) Odometer. 21. Which of these clocks do you think will be most accurate? A) Pendulum. B) Water clock. C) Sundial. D) Hourglass. Show Answer Correct Answer: A) Pendulum. 22. What is the formula for acceleration? A) Acceleration = Change in velocity / Time taken. B) Acceleration = Velocity / Time taken. C) Acceleration = Distance / Time taken. D) Acceleration = Speed / Distance. Show Answer Correct Answer: A) Acceleration = Change in velocity / Time taken. 23. The speed of a fast-moving train is usually measured in meters per hour. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. When a body covers equal distance in equal interval of time, it is said to be in? A) Average speed. B) Non-uniform motion. C) Uniform motion. D) Speed. Show Answer Correct Answer: C) Uniform motion. 25. A simple pendulum takes 55s to complete 50 oscillations. What is the time-period of this pendulum? A) 3.2 s. B) 2.1 s. C) 1.1 s. D) 0.9 s. Show Answer Correct Answer: C) 1.1 s. ← PreviousNext →Related QuizzesClass 7 Science Chapter 9 Motion And Time Quiz 1Class 7 Science Chapter 9 Motion And Time Quiz 2Class 7 Science Chapter 9 Motion And Time Quiz 3Class 7 Science Chapter 9 Motion And Time Quiz 4Class 7 Science Chapter 9 Motion And Time Quiz 5Class 7 Science Chapter 9 Motion And Time Quiz 6Class 7 Science Chapter 9 Motion And Time Quiz 7Class 7 Science Chapter 9 Motion And Time Quiz 8Class 7 Science Chapter 9 Motion And Time Quiz 9Class 7 Science Chapter 9 Motion And Time Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books