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Air Around Us - 2 Class 2 Worksheet EVS
Q1: Multiple-Choice Questions (MCQs)
(i) What is air?
(a) Something we eat
(b) Something we breathe
(c) Something we drink
(d) Something we wear
Ans: (b)
Air is the invisible gas that we breathe.
(ii) Which of these is NOT a part of the air?
(a) Oxygen
(b) Water
(c) Carbon dioxide
(d) Milk
Ans: (d)
Milk is not a part of the air. The air is made up of gases like oxygen, nitrogen, and a little carbon dioxide.
(iii) What do we use to fly kites?
(a) Water
(b) Wind
(c) Electricity
(d) Rocks
Ans: (b)
We use the wind to fly kites. The wind makes the kite go up in the sky.
(iv) What is the name of the gas we need to breathe and stay alive?
(a) Helium
(b) Carbon dioxide
(c) Oxygen
(d) Nitrogen
Ans: (c)
We need oxygen to breathe and stay alive.
(v) What do we call the movement of air?
(a) Wind
(b) Rain
(c) Clouds
(d) Sun
Ans: (a)
The movement of air is called wind.
Q2: Fill in the Blanks
(i) We breathe in ________.
Ans: air
(ii) Wind helps us fly ________.
Ans: kites
(iii) We need ________ to stay alive.
Ans: oxygen
(iv) The air is made up of gases like ________ and nitrogen.
Ans: oxygen
(v) The movement of air is called ________.
Ans: wind
Q3: Short Questions Answer
(i) What is air, and why is it important?
Ans: Air is the invisible mixture of gases that surrounds us. It is important because we need air to breathe and stay alive.
(ii) How do we use the wind to fly kites?
Ans: We use the wind to fly kites by letting the wind blow into the kite. The wind lifts the kite up into the sky.
(iii) What happens if we don't have enough oxygen?
Ans: If we don't have enough oxygen, we can't breathe properly, and our body won't get the oxygen it needs to stay alive.
(iv) Name one gas that is a part of the air besides oxygen.
Ans: Carbon dioxide is another gas that is a part of the air.
(v) Can you describe what clouds look like?
Ans: Clouds are fluffy and white in the sky. They can sometimes look like puffy cotton candy or soft pillows.
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FAQs on Air Around Us - 2 Class 2 Worksheet EVS
| 1. What is air made of? |  |
Ans. Air is made up of a mixture of gases, primarily nitrogen (78%), oxygen (21%), and traces of other gases such as carbon dioxide, argon, and water vapor.
| 2. How does air help in the process of respiration? | |
Ans. The air we breathe contains oxygen, which is essential for the process of respiration. When we inhale, oxygen from the air enters our lungs and passes into the bloodstream, where it is carried to all the cells in our body. The cells use oxygen to produce energy through a process called cellular respiration.
| 3. How does air help in maintaining the Earth's temperature? | |
Ans. The Earth's atmosphere acts as a blanket by trapping heat from the Sun. When sunlight reaches the Earth's surface, it warms up and releases heat energy back into the atmosphere. The gases in the air, such as carbon dioxide and water vapor, absorb and trap some of this heat, helping to maintain a stable temperature on Earth.
| 4. Why does air pressure decrease with increasing altitude? | |
Ans. Air pressure is caused by the weight of the air above a certain point. As altitude increases, the amount of air above decreases, leading to a decrease in air pressure. This is because the higher up you go, the thinner the atmosphere becomes, and there are fewer air molecules pressing down on a given area.
| 5. How does air pollution affect human health? | |
Ans. Air pollution can have harmful effects on human health. Breathing in polluted air can lead to various respiratory problems such as asthma, bronchitis, and even lung cancer. It can also exacerbate existing health conditions and weaken the immune system. Long-term exposure to air pollution can have serious consequences on overall health and well-being.
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