This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 9 Motion And Time – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 9 Motion And Time Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the difference between speed and velocity? A) Speed is scalar; velocity is vector (includes direction). B) Velocity measures distance only. C) Speed includes direction, while velocity does not. D) Speed is a type of velocity. Show Answer Correct Answer: A) Speed is scalar; velocity is vector (includes direction). 2. A bus takes 30 minutes to travel a distance of 25 kilometers. The speed of the bus in km/h is: A) 55 km/h. B) 50 km/h. C) 5 km/h. D) 75 km/min. Show Answer Correct Answer: B) 50 km/h. 3. Which one of these aquatic plants grows completely submerged under water? A) Water hyacinth. B) Hydrilla. C) Water lily. D) Lotus. Show Answer Correct Answer: B) Hydrilla. 4. A simple pendulum takes 40s to complete 20 oscillation. What is the time period of the pendulum? A) 2s. B) Or. C) 40s. D) 40m. Show Answer Correct Answer: A) 2s. 5. What helps camel to be protected by sand? A) Long Eyelashes. B) Long Legs. C) Leathery Mouth. D) Padded Feet. Show Answer Correct Answer: A) Long Eyelashes. 6. What is acclimatization? A) Winter sleep of some organisms. B) The small changes that take place in the body of an organism over a short period, to overcome small problems arising due to changes in its surroundings. C) Feature that helps an organism to survive in a particular type of habitat. D) None of the above. Show Answer Correct Answer: B) The small changes that take place in the body of an organism over a short period, to overcome small problems arising due to changes in its surroundings. 7. If 20 oscillations are covered in 10 seconds, what is its time period A) 2 secs. B) 1 Secs. C) 1/2 Secs. D) None of the above. Show Answer Correct Answer: C) 1/2 Secs. 8. If a car travels 100 km in 2 hours, what is its speed? A) 50 km/h. B) 75 km/h. C) 25 km/h. D) 100 km/h. Show Answer Correct Answer: A) 50 km/h. 9. The distance covered by an object in unit time is known as: A) Speed. B) Uniform motion. C) Non-uniform motion. D) Motion. Show Answer Correct Answer: A) Speed. 10. The motion of the earth is periodic. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. A car covers 40 km in the first hour, 115 km in the next two hours, and 45km in the next one hour. What is the average speed of the car? A) 40 km/h. B) 50 km/h. C) 100 km/h. D) 800 km/h. Show Answer Correct Answer: B) 50 km/h. 12. The distance traveled in an unit time is ..... A) Speed. B) Velocity. C) Motion. D) None of the above. Show Answer Correct Answer: A) Speed. 13. A school bus travels at 40 km/h to cover a distance of 16 km. How much time will the bus take to cover this distance? A) 16 mins. B) 18 mins. C) 24 mins. D) 12.05 mins. Show Answer Correct Answer: C) 24 mins. 14. In water habitat plants have long roots and large and flat leaves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. The hammer of an electric bell has motion: A) Circular. B) Vibratory. C) Linear periodic. D) None of the above. Show Answer Correct Answer: B) Vibratory. 16. What does a horizontal line on a distance-time graph indicate? A) The object is moving backwards. B) The object is at rest. C) The object is moving at a constant speed. D) The object is accelerating. Show Answer Correct Answer: B) The object is at rest. 17. A motorcyclist drives from A to B with a uniform speed of 30 kmh$^{-1}$ and returns back with a speed of 20 kmh$^{-1}$. Find its average speed. A) 0 m/s. B) 25 m/s. C) 12 m/s. D) 24 m/s. Show Answer Correct Answer: D) 24 m/s. 18. Stopwatches and Stop clocks can measure time up to A) 1/10 of a second. B) 1/100 of a second. C) 1/1000 of a second. D) 1 minute. Show Answer Correct Answer: A) 1/10 of a second. 19. A body is said to be in motion if it changes its position with respect to time. (True/False) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. The action or process of moving or being moved A) Motion. B) Speed. C) Distance. D) Going. Show Answer Correct Answer: A) Motion. 21. The device that measures distance covered by a vehicle A) Speedometer. B) Odometer. C) Distance time graph. D) Time distance graph. Show Answer Correct Answer: B) Odometer. 22. Which of these explains the time period of a simple pendulum? A) The number of oscillations in an hour. B) The number of oscillations in one minute. C) Time taken to complete one full oscillation. D) Time taken by the pendulum to come at rest. Show Answer Correct Answer: C) Time taken to complete one full oscillation. 23. A falling stone exhibits ..... Motion A) Circular. B) Periodic. C) Rotational. D) Rectilinear. Show Answer Correct Answer: D) Rectilinear. 24. The amount of heat which is used to change the state of matter not for increase the temperature is called A) Latent heat. B) Specific heat. C) Heat capacity. D) None of the above. Show Answer Correct Answer: A) Latent heat. 25. The to and fro of an object is known as A) Oscillatory motion. B) Oscilatory motion. C) Osccilatory motion. D) Linear motion. Show Answer Correct Answer: A) Oscillatory motion. ← 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