This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Motion And Time > Class 7 Science Chapter 9 Motion And Time – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 9 Motion And Time Quiz 16 (11 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The speed of an object can be represented by: A) Distance-time graph or line graph. B) Bar graph. C) Pie chart. D) Histograms. Show Answer Correct Answer: A) Distance-time graph or line graph. 2. How do you measure time accurately? A) Count the number of heartbeats in a minute. B) Use a sundial and estimate the time based on shadows. C) Use atomic clocks and synchronize with UTC. D) Rely on the position of the stars without any calibration. Show Answer Correct Answer: C) Use atomic clocks and synchronize with UTC. 3. Motion of blades of a ceiling fan A) Periodic. B) Oscillatory. C) Translatory. D) Rotatory. Show Answer Correct Answer: D) Rotatory. 4. Oscillations are set in a simple pendulum whose length is 2m and the mass of the bob is 2kg. Its time period A) Is always constant. B) Increases slowly. C) Decreases slowly. D) First increases and then decreases. Show Answer Correct Answer: A) Is always constant. 5. Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance? A) 10 miles. B) 7 miles. C) 6 miles. D) 8 miles. Show Answer Correct Answer: A) 10 miles. 6. Which of the following does not show oscillatory motion? A) Fan. B) Pendulum. C) See-Saw. D) Swing. Show Answer Correct Answer: A) Fan. 7. What is the speed of an object if it covers 100 meters in 5 seconds? A) 15 m/s. B) 10 m/s. C) 25 m/s. D) 20 m/s. Show Answer Correct Answer: B) 10 m/s. 8. Is one of the important timing devices used for measuring the time taken by a worker to complete a job. A) Stopwatch. B) Training equipment. C) Time study board. D) Videotape camcorders. Show Answer Correct Answer: A) Stopwatch. 9. 24km/hr South is an example of A) Velocity. B) Speed. C) Direction. D) Acceleration. Show Answer Correct Answer: A) Velocity. 10. A simple pendulum consists of A) A bob and a string. B) A bob only. C) A string only. D) Stop watch. Show Answer Correct Answer: A) A bob and a string. 11. When an object is said to be in rest? A) When it receives heat from its surrounding. B) When it does not change its position. C) When it is dancing. D) When it is playing. Show Answer Correct Answer: B) When it does not change its position. ← PreviousRelated QuizzesScience QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books