Worksheet on importance of air contains various types of questions on the presence of air in the form of wind, breeze, gale and storm.
We know the presence of air is everywhere on the Earth but there is no air on the moon.
I. Fill in the blanks:
(i) ________ air is harmful to us.
(ii) When the wind blows gently it is known as a ________.
(iii) Air also contains ________, smoke ________ and germs.
(iv) All living things use ________ to breathe in.
(v) Plants use carbon dioxide during ________.
II. Answer the following questions:
(i) Name some gases present in the air.
(ii) How does the air get polluted?
(iii) How should we keep the air clean?
(iv) How to use vehicles in good condition?
(v) What is the difference between a gale and a storm?
III. Mark (√) for the correct statement and (X) for the wrong statement:
(i) Air is in some places on the Earth.
(ii) A storm can even destroy heavy and strong objects.
(iii) Living things does need air for breathing.
(iv) On the moon there is no air.
(v) Air does not contain hydrogen.
Check the answers of the worksheet on importance of air:
I. (i) Polluted
(iii) water vapour, dust
II. (i) Some gases present in the air are oxygen, carbon dioxide, nitrogen, etc.
(ii) Power plants, factories and vehicles give out smoke and some harmful gases that pollute the ar.
(iii) We should keep the air clean by planting more trees.
(iv) Vehicles should be checked regularly to control the smoke given out by it to use vehicles in good condition.
(v) When the wind blows very fast, it is called a gale but when the wind blows extremely fast and it rains heavily it is called a storm.
III. (i) X