Class 7 Science Chapter 9 Motion And Time Quiz 2 (25 MCQs)

Quiz Instructions

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1. The sun appears to move across the sky. This apparent motion of the sun is caused because Earth is
2. Time between one sunrise and the next sunrise was called as
3. The water clock is also known as
4. In amoeba digestive juice are secreted in
5. What is the significance of the slope in a distance-time graph?
6. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is
7. 1 microsecond is ..... of a second
8. Salma takes 15 minutes to walk from her home to her friend's house. She finds the house closed and she comes back to her house jogging in 9 minutes. What is her average speed, if the distance between her house and her friend's house is 2 km?
9. The shortest distance between two places along the straight-line path is called .....
10. Which of the following devices can help measure the speed of a vehicle?
11. In a distance-time graph, what does a straight line indicate?
12. The time from one full moon to next was known as
13. What is the metallic ball in the pendulum called?
14. A car travels at 54 km/h for first 20 s, 36 km/h for next 30 s and finally 18 km/h for next 10 s. Average speed of the car is:
15. A spaceship travels 36000 km in one hour.Express its speed in km/s.
16. Speed=
17. The smallest unit measured by a wrist watch accurately is
18. ..... is a refinement of the pendulum clock.
19. Example of a pendulum?
20. One of the following is not a type of soil
21. The time period of a simple pendulum depends upon .....
22. THE DISTANCE COVERED BY A OBJECT IN UNIT TIME IS CALLED ITS
23. Which astronomer is the one to prove that the motion of a pendulum is periodic?
24. In a mechanical wristwatch, which part works in the same way as a pendulum in a clock?
25. What instrument is used to measure time intervals in a laboratory experiment?