Question

D.
20. What is wind energy. Me
21. Fill in the blanks :
(i) Rain, hail and snow
water in the river.
(ii) Change of water into
is called evaporation.
(iii) Water vapour
to form tiny droplets.
22. What are magnetic materials ? Give two examples.
23. Why should an electrician use rubber gloves while repairing an electric switch
24. List the common characteristics of living things?
25. (i) How many poles are there in a magnet?
(ii) Write any two uses of magnet.
26. (i) What is recycling ?
(ii) Is garbage disposal the responsibility only of government ?
(iii) Is it possible to reduce the problems related to disposal of garbage. If yes then how ?
27. List the activities that are possible due to the presence of air. (any three)
28. Match the following Columns.
Column A
Column B
(a) Nitrogen and Oxygen
(i) open area
(b) Landfill
(ii) magnetic material
(c) Red worms
(iii) 99% of air
(d) Iron
(iv) magnesia
(e) Magnetite
(v) do not have teeth
C
ollo
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Answer 1

Answer:

25 a 2. north and South Pole