This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 9 Motion And Time – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 9 Motion And Time Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Satellite show A) Periodic. B) Straight. C) All the above. D) None of the above. Show Answer Correct Answer: A) Periodic. 2. 1 nanosecond is ..... of a second. A) 1 billionth. B) 23 millionth. C) 1 trillionth. D) None of the above. Show Answer Correct Answer: A) 1 billionth. 3. The time between two sunrises is considered as A) Year. B) Month. C) Day. D) Season. Show Answer Correct Answer: C) Day. 4. An object moving in a straight line with constant speed is said to be in A) Uniform motion. B) Non uniform motion. C) Oscillatory motion. D) Oscilatery motion. Show Answer Correct Answer: A) Uniform motion. 5. A simple pendulum takes 42 sec. to complete 20 oscillations. What is its time period?(a) 2.1 s(b) 4.2 s(c) 21 s(d) 8.40 s A) . B) . C) . D) . Show Answer Correct Answer: A) . 6. The pace an object travels in a certain amount of time A) Speed. B) Acceleration. C) Velocity. D) Motion. Show Answer Correct Answer: A) Speed. 7. The basic unit of time is A) HOUR. B) SECOND. C) KM. D) YEAR. Show Answer Correct Answer: B) SECOND. 8. Uniform Speed-When an object covers different distances in different time gaps, it is said to have a non-uniform speed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. Which clocks vibration are very regular and are accurate to one second? A) Stopwatch. B) Quartz. C) Atomic clock. D) Pendulum clock. Show Answer Correct Answer: C) Atomic clock. 10. A diagram showing relationship between two variable quantities each measured along one of a pair of axes is called ..... A) Axis. B) Coordinates. C) Graph. D) Variables. Show Answer Correct Answer: C) Graph. 11. Which type of motion is exhibited by the hands of a clock? A) Straight line motion. B) Oscillatory motion. C) Circular motion. D) Periodic motion. Show Answer Correct Answer: C) Circular motion. 12. The graphical representation of uniform motion of an object A) Linear graph. B) Curved graph. C) Parallel graph. D) Both a and b. Show Answer Correct Answer: A) Linear graph. 13. Some time measuring devices which were used before discovery of pendulum are A) Sundials. B) Water Clocks. C) Sand clocks. D) All of these. Show Answer Correct Answer: D) All of these. 14. The meter that is used to measure speed of a vehicle is A) Speedometer. B) Odometer. C) Anemometer. D) Thermometer. Show Answer Correct Answer: A) Speedometer. 15. The gnomon in a sundial points in which direction? A) North-South. B) East-West. C) All the above. D) None of the above. Show Answer Correct Answer: A) North-South. 16. The smaller units of time are ..... and ..... A) Kilometers, meters (km), (m). B) Centimetre, millimetre (cm), (mm). C) Centimeters, kilometers (cm), (km). D) None of the above. Show Answer Correct Answer: B) Centimetre, millimetre (cm), (mm). 17. The instrument used to measure speed of a vehicle is A) Odometer. B) Speedometer. C) Ammeter. D) Voltmeter. Show Answer Correct Answer: B) Speedometer. 18. MOTION OF AN OBJECT IS REPRESNTED IN PICTORIAL FORM KNOWN AS ..... A) BAR-DISTANCE GRAPH. B) DISTANCE-TIME GRAPH. C) SPEED-TIME GRAPH. D) Pictograph. Show Answer Correct Answer: B) DISTANCE-TIME GRAPH. 19. A person starts riding at 9:00 am to reach a location X which is about 175 km away from the starting point. He drives at an average speed of 70 km/hr. When is the person likely to reach the destination? A) 10:00 am. B) 10:30 am. C) 11:00 am. D) 11:30 am. Show Answer Correct Answer: D) 11:30 am. 20. What is the time taken by a pendulum bob to complete one oscillation called? A) Oscillation time. B) Frequency. C) Time period. D) Time interval. Show Answer Correct Answer: C) Time period. 21. Who invented the simple pendulum? A) Einstein. B) Galileo Galilei. C) Newton. D) Nikola Tesla. Show Answer Correct Answer: B) Galileo Galilei. 22. If a car covers 300 km in 5 hours, what is the speed of the car in m/s? A) 6.6. B) 16.6. C) 60. D) 60.6. Show Answer Correct Answer: B) 16.6. 23. The park is 2 miles east of the school. What is the frame of reference in the sentence? A) The school. B) The park. C) East. D) None of the above. Show Answer Correct Answer: A) The school. 24. What is a chronometer? A) An instrument that measures time accurately. B) An instrument that measures speed accurately. C) An instrument that measures steps accurately. D) An instrument that measures power accurately. Show Answer Correct Answer: A) An instrument that measures time accurately. 25. Faster vehicle has a slowest speed. A) False. B) True. C) None of these. D) None of the above. Show Answer Correct Answer: A) False. 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