Answer the 3rd grade science questions to revise the knowledge of the topics we learned in third grade.
I. Answer the following questions:
(i) How do most accidents take place?
(ii) What are the features of a good house?
(iii) How do animals differ in their eating habits?
(iv) Name the planet which has life on it.
(v) Which gas do we breathe in and which gas do we breathe out?
(vi) How do living things differ from man-made things? Name three natural living things.
(vii) Which part of the plant sucks water from the soil to supply different parts of the plant? Name its different kinds.
(viii) What is the different between a herbivore and an omnivore? Name three herbivores and three omnivores.
(ix) How and where do birds reproduce?
(x) Name the system which is formed with heart, blood and blood vessels. Which organ of this syte pumps blood to other organs?
(xi) What is deforestation?
(xii) How do birds fly? Name any two birds which cannot fly.
II. Name them:
(i) Pollution by exhaust fumes from factories and vehicles.
(ii) The hottest part of the Earth.
(iii) An automatic signal which controls road traffic through three colored lights.
(iv) The system by which heart sends blood to other parts of the body.
III. Fill in the blanks using the given words:
house, omnivores, green, reproduce, feathers, skin, skeleton
(i) Only living things can _________.
(ii) Some plants do not have _________ leaves.
(iii) Dogs are _________.
(iv) Only birds have _________.
(v) _________ is the sense of feeling.
(vi) _________ gives our body a shape.
(vii) A good _________ should be clean, airy and safe.
IV. Match the following:
(i) kidneys (a) insect
(ii) butterfly (b) planting trees
(iii) afforestation (c) blood purification
(iv) first aid (d) flat broad part of the leaf
(v) leaf blade (e) first help injured person needs