Tamil Nadu Board of Secondary EducationTamil Nadu Primary School Class 4th
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Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board chapter 3 - Air We Breathe [Latest edition]

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Science Term 3 - Class 4th Tamil Nadu State Board - Shaalaa.com

Chapter 3: Air We Breathe

ActivityLet us doEvaluation
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Activity [Page 88]

Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board Chapter 3 Air We Breathe Activity [Page 88]

Activity | Q 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?

Let us do [Pages 89 - 90]

Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board Chapter 3 Air We Breathe Let us do [Pages 89 - 90]

Let us do | Q 1 | Page 89

Tick the objects which has air in it.

Let us do | Q 2 | Page 90

Tick the object which gives out water vapour.

Activity [Pages 91 - 96]

Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board Chapter 3 Air We Breathe Activity [Pages 91 - 96]

Activity | Q 1 | Page 91

Write the percentage of the gases present in air.

Activity | Q 2 | Page 91

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.

Activity | Q 3 | Page 93

Classify the following.

( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)

Things which give out oxygen Things which give out carbon dioxide
   
   
   
Activity | Q 4 | Page 95

Tick the causes of global warming

Activity | Q 5 | Page 96

Write slogans on the harmful effects of air pollution in a chart and stick it on the display board.

Evaluation [Pages 97 - 98]

Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board Chapter 3 Air We Breathe Evaluation [Pages 97 - 98]

Choose the correct answer.

Evaluation | Q I. 1. | Page 97

Air is a ____.

  • Mixture

  • Compound

  • Complex

Evaluation | Q I. 2. | Page 97

Percentage of Oxygen in air is about _______%

  • 21

  • 78

  • 1

Evaluation | Q I. 3. | Page 97

Root nodules of some plants contain _____.

  • Oxygen

  • Nitrogen

  • Neon

Evaluation | Q I. 4. | Page 97

The major cause of air pollution is _____.

  • Waste

  • Smoke

  • Water vapour

Evaluation | Q II. 1. | Page 97

Who am I?

I am a mixture of gases.

Evaluation | Q II. 2. | Page 97

Who am I?
I give you oxygen.

Evaluation | Q II. 3. | Page 97

Who am I?

I am not the supporter of burning.

Evaluation | Q II. 4. | Page 97

You can help me to decrease pollution by riding on me.

Write ‘True‛ or ‘False‛.

Evaluation | Q III. 1. | Page 97

Plants need nitrogen for their growth.

  • True

  • False

Evaluation | Q III. 2. | Page 97

Air is made up of oxygen only.

  • True

  • False

Evaluation | Q III. 3. | Page 97

The gas used for burning things is Argon.

  • True

  • False

Evaluation | Q III. 4. | Page 97

Carbonated drinks are bad to health.

  • True

  • False

Evaluation | Q IV. | Page 97

Math the following.

1. Nitrogen Air pollution
2. Balloon Smoke and fog
3. Smog 78%
4. Lung cancer Air

Fill in the blanks.

Evaluation | Q V. 1. | Page 97

Air is a mixture of many _______.

Evaluation | Q V. 2. | Page 97

Amount of carbon dioxide in the air is ______%.

Evaluation | Q V. 3. | Page 97

We inhale _______ gas.

Evaluation | Q V. 4. | Page 97

______ is used in fire extinguishers.

Answer the following questions in brief.

Evaluation | Q VI. 1. | Page 98

What are the importance of air in our daily life?

Evaluation | Q VI. 2. | Page 98

What are the components of air?

Evaluation | Q VI. 3. | Page 98

What are the adverse effects of air pollution?

Evaluation | Q VI. 4. | Page 98

List uses of oxygen.

Give short answers.

Evaluation | Q VII. 1. | Page 98

How can we reduce air pollution?

Evaluation | Q VII. 2. | Page 98

What are the diseases caused due to air pollution?

Evaluation | Q VII. 3. | Page 98

List out the uses of carbon dioxide.

Chapter 3: Air We Breathe

ActivityLet us doEvaluation
Science Term 3 - Class 4th Tamil Nadu State Board - Shaalaa.com

Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board chapter 3 - Air We Breathe

Samacheer Kalvi solutions for Science Term 3 - Class 4th Tamil Nadu State Board chapter 3 (Air We Breathe) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Tamil Nadu Board of Secondary Education Science Term 3 - Class 4th Tamil Nadu State Board solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Samacheer Kalvi textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Science Term 3 - Class 4th Tamil Nadu State Board chapter 3 Air We Breathe are Components of Air: Carbon Dioxide, Importance of Carbon Dioxide, Air Around Us, Importance of Air, Air is a Mixture, Air Pollution and Its Causes, Composition and Components of Air, Importance of Oxygen, Components of Air: Oxygen, Importance of Nitrogen, Components of Air: Nitrogen, Prevention of Air Pollution, Effects of Air Pollution.

Using Samacheer Kalvi Class 4th solutions Air We Breathe exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Samacheer Kalvi Solutions are important questions that can be asked in the final exam. Maximum students of Tamil Nadu Board of Secondary Education Class 4th prefer Samacheer Kalvi Textbook Solutions to score more in exam.

Get the free view of chapter 3 Air We Breathe Class 4th extra questions for Science Term 3 - Class 4th Tamil Nadu State Board and can use Shaalaa.com to keep it handy for your exam preparation

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