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Class 7 Science Chapter 9 Motion And Time Quiz 1 (60 MCQs)

Quiz Instructions

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1. 1 nanosecond is ..... of a second.
2. The time between two sunrises is considered as
3. An object moving in a straight line with constant speed is said to be in
4. 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
5. The pace an object travels in a certain amount of time
6. The basic unit of time is
7. Uniform Speed-When an object covers different distances in different time gaps, it is said to have a non-uniform speed.
8. Which clocks vibration are very regular and are accurate to one second?
9. A diagram showing relationship between two variable quantities each measured along one of a pair of axes is called .....
10. Which type of motion is exhibited by the hands of a clock?
11. The graphical representation of uniform motion of an object
12. Some time measuring devices which were used before discovery of pendulum are
13. The meter that is used to measure speed of a vehicle is
14. The gnomon in a sundial points in which direction?
15. The smaller units of time are ..... and .....
16. The instrument used to measure speed of a vehicle is
17. MOTION OF AN OBJECT IS REPRESNTED IN PICTORIAL FORM KNOWN AS .....
18. 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?
19. What is the time taken by a pendulum bob to complete one oscillation called?
20. The animals that prey on other animals are known as .....
21. Who invented the simple pendulum?
22. If a car covers 300 km in 5 hours, what is the speed of the car in m/s?
23. The park is 2 miles east of the school. What is the frame of reference in the sentence?
24. What is a chronometer?
25. Faster vehicle has a slowest speed.
26. The sun appears to move across the sky. This apparent motion of the sun is caused because Earth is
27. Time between one sunrise and the next sunrise was called as
28. The water clock is also known as
29. In amoeba digestive juice are secreted in
30. What is the significance of the slope in a distance-time graph?
31. 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
32. 1 microsecond is ..... of a second
33. 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?
34. The shortest distance between two places along the straight-line path is called .....
35. Which of the following devices can help measure the speed of a vehicle?
36. In a distance-time graph, what does a straight line indicate?
37. The time from one full moon to next was known as
38. What is the metallic ball in the pendulum called?
39. 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:
40. A spaceship travels 36000 km in one hour.Express its speed in km/s.
41. The smallest unit measured by a wrist watch accurately is
42. ..... is a refinement of the pendulum clock.
43. Example of a pendulum?
44. One of the following is not a type of soil
45. The time period of a simple pendulum depends upon .....
46. THE DISTANCE COVERED BY A OBJECT IN UNIT TIME IS CALLED ITS
47. Which astronomer is the one to prove that the motion of a pendulum is periodic?
48. In a mechanical wristwatch, which part works in the same way as a pendulum in a clock?
49. What instrument is used to measure time intervals in a laboratory experiment?
50. Which of the following is a unit of speed?
51. The basic unit of speed is km/h.
52. Nearly all the clocks make use of?
53. A train travels 25 km in.5 hrs. How fast is the train going?
54. If a car travels 200 km in 4 hours, what is its speed?
55. The pictorial representation of two variables inter dependent of one another is known as
56. The unit of speed is
57. How will you convert the speed given in km/h to m/s?
58. A storm is moving toward your house at a speed of 20 km/hr. It is now 60 km away from your house. In what time will the storm reach your house?
59. The meter that measure the distance moved by the vehicle is called as
60. Describe a scenario that illustrates non-uniform motion.
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