Worksheet Solutions: Air Around Us - 1

Fill in the Blanks

(Pick the correct word from the options in brackets)

(Wind, space, light, air, plants, weight, feel)
(i) We can  _____ air but not see it. 
(ii) _____ all around us. 
(iii) Air takes up  _____.
(iv) Moving air is called _____.
(v) We need air to _____ a fire. 
(vi) Animals and _____ need air to live.
(vii) Air has _____.
Ans: 
(i) We can feel air but not see it.
(ii) Air all around us.
(iii) Air takes up weight.
(iv) Moving air is called wind.
(v) We need air to light a fire.
(vi) Animals and plants need air to live.
(vii) Air has space.

TRUE or FALSE

(Write TRUE or FALSE for given statements)

(i) Air is not present inside a room. 
(ii) All animals need air to breathe. 
(iii) Air helps ships to sail.
(iv) We do not need air to fly a kite. 
(v) To burn anything, we need air. 
(vi) Plants and animals will die without air.
Ans: 
(i) False
(ii) True
(iii) True
(iv) False
(v) True
(vi) True

Multiple Choice Questions (MCQ)

(Choose the correct answer)

(i) Which of the following moves with the help of air?
(a) A Boy
(b) A Dog
(c) A Boat
(d) A Bat
Ans: (c)
Air helps boats to move.

(ii) Which of the following does not breathe in air?
(a) Cat
(b) Rose plant
(c) Toy aeroplane
(d) Parrot
Ans: (c)
It is a non living thing, it does not breathe.

(iii) Burning of paper needs:
(a) Water
(b) Air
(c) Wood    
(d) Sand
Ans: (a)
Burning paper needs air.

(iv) You can find air in a:
(a) football
(b) newspaper    
(c) tree
(d) glass
Ans: (a)
We can find air in football.

(v) Moving air is called:
(a) storm    
(b) heat
(c) wind    
(d) wave
Ans: (d)
Moving air is called wind.

(vi) Which of the following does not need air?
(a) Windmill 
(b) Swimming tube
(c) Sailboat 
(d) Reading a book
Ans: (d)
Reading a book does not need air.

Answer the following questions

(i) What is wind?
Ans: In simple terms, the wind is nothing but moving air. The air movement is always from high pressure to low-pressure areas.

(ii) Name any two uses of air.
Ans: Uses of air:

• It is filled up with balloons and swimming tubes.
• it is filled in the tubes inside the tires.
• It helps to dry clothes.

(iii) Why is a burning candle put out when you cover it with a glass jar?
Ans: The burning candle produces carbon dioxide and water in the form of water vapor. The glass becomes foggy due to this water. The flame goes out, of course, from a lack of enough oxygen in the glass.

(iv) Can you see air?
Ans: We cannot see air but can feel it. Air is used in balloons, swimming tubes, drying clothes, etc. We cannot live without water. Rain is the main source of water.

(v) Why does a balloon become large in size when we blow air inside it?
Ans: When a balloon is inflated, the air inside it expands, thereby exerting pressure on the balloon walls. As a result, the size of the balloon increases.

(vi) How does fish breathe in water?
Ans: A fish breathes by taking water into its mouth and forcing it out through the gill passages.

(vii) Few pictures are given below. Tick the ones which need air to work:

Ans:
(a) Ballon
(c) kites
(e) windmill

(viii) Complete the puzzle given below: 
Down:
1. Air moves the wind mill
2. Air occupies
Across:
3. All living things need air to
4. Air has

Ans: 

• Move 
• Space 
• Breathe 
• Weight