Class 9th science quiz competition [May 2024]

1. Velocity is defined as ----- per time.

2. When a body vibrates, it compresses the air surrounding and forms a high-density area known as —————-.

3. Which of the following conditions is most favourable for converting gas into liquid?

4. The distance which compression or a rarefaction travels per unit of time gives————-

5. Mexican wave in a stadium is an example of

6. The atomic symbol of Iron is —————.

7. Suppose a boy is moving with a uniform velocity of 10 m/s on a merry-go-round ride. Which of the following is true of the given scenario?

8. The number of compressions or rarefactions per unit time gives ———–

9. The phenomenon where a sound produced is heard again due to reflection is called ———–

10. The atomic symbol of silver is —————

11. Which of the following is not a property of gas?

12. Which of the following phenomena would increase on rising temperature?

13. Sound travels through which medium?

14. Which of the following statements is incorrect about the state of matter?

15. When the vibrating object moves backwards, it creates a region of low pressure called —————-

16. What does the slope of the velocity-time graph give?

17. Which of the following is true of a free-falling body?

18. In all the three states of water, (i.e. ice, liquid and vapour) chemical composition of water

19. What does the slope of the distance-time graph give?

20. The physical quantity that has both magnitude and direction is known as