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![Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board chapter 3 - Air We Breathe - Shaalaa.com](/images/science-term-3-english-class-4-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board chapter 3 - Air We Breathe")
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Solutions for Chapter 3: Air We Breathe
Below listed, you can find solutions for Chapter 3 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science - Term 3 [English] Class 4 TN Board.
Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board 3 Air We Breathe Activity 1 [Page 88]
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board 3 Air We Breathe Let us do [Pages 89 - 90]
Tick the objects which has air in it.
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Tick the object which gives out water vapour.
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Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board 3 Air We Breathe Activity 2 [Pages 91 - 96]
Write the percentage of the gases present in air.
You might have seen some huge colourful balloons flying high in malls. Those balloons are filled with nitrogen gas. Write the reason for filling nitrogen gas in balloons.
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
Tick the causes of global warming
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Write slogans on the harmful effects of air pollution in a chart and stick it on the display board.
Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board 3 Air We Breathe Evaluation [Pages 97 - 98]
Choose the correct answer.
Air is a ____.
Mixture
Compound
Complex
Percentage of Oxygen in air is about _______%
21
78
1
Root nodules of some plants contain _____.
Oxygen
Nitrogen
Neon
The major cause of air pollution is _____.
Waste
Smoke
Water vapour
Who am I?
I am a mixture of gases.
Who am I?
I give you oxygen.
Who am I?
I am not the supporter of burning.
You can help me to decrease pollution by riding on me.
Write ‘True‛ or ‘False‛.
Plants need nitrogen for their growth.
True
False
Air is made up of oxygen only.
True
False
The gas used for burning things is Argon.
True
False
Carbonated drinks are bad to health.
True
False
Math the following.
| 1. | Nitrogen | Air pollution |
| 2. | Balloon | Smoke and fog |
| 3. | Smog | 78% |
| 4. | Lung cancer | Air |
Fill in the blanks.
Air is a mixture of many _______.
Amount of carbon dioxide in the air is ______%.
We inhale _______ gas.
______ is used in fire extinguishers.
Answer the following questions in brief.
What are the importance of air in our daily life?
What are the components of air?
What are the adverse effects of air pollution?
List uses of oxygen.
Give short answers.
How can we reduce air pollution?
What are the diseases caused due to air pollution?
List out the uses of carbon dioxide.
Solutions for 3: Air We Breathe
Samacheer Kalvi solutions for Science - Term 3 [English] Class 4 TN Board chapter 3 - Air We Breathe
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Concepts covered in Science - Term 3 [English] Class 4 TN Board chapter 3 Air We Breathe are Air Around Us, Importance of Air, Air is a Mixture, Importance of Nitrogen, Importance of Oxygen, Importance of Carbon Dioxide, Air Pollution and Its Causes, Effects of Air Pollution, Prevention of Air Pollution, Composition and Components of Air.
Using Samacheer Kalvi Science - Term 3 [English] Class 4 TN Board solutions Air We Breathe exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science - Term 3 [English] Class 4 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
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