Short Type Questions
Instruction Answer the questions given below.
Q. II. What are weeds? How can we control them?
Q. 12. How does the vaccine work in our body ?
Q. 13. What advice does the Petroleum Conservation Research Association (PCRA) in India give to people to save petrol and diesel while driving?
Q. 14. Why should we conserve biodiversity?
Q. 15. What is metamorphosis ? Name the different stages of the life cycle of a frog in sequence.
(3 marks)
Q. 16. Write one example for the given forces :
(A) Muscular Force,
(B) Gravitational Force,
(C) Frictional Force.
Q. 17. Why are the objects moving in a liquid given a special shape
Q. 18. How can noise pollution be controlled in residual areas? Write any three solution
Q. 19. Suppose, you are out of the house and there is an earthquake, then what precautions will you take to protect yourself?
Q. 20. The magnetic needle does not get deflected in the arrangement shown in the figure. Write any three reasons why the needle does not deflect.
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