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Important Questions and Answers for Class 8 Science Chapter 13 Our Home Earth A Unique Life Sustaining Planet 2025-26

Q: 1. What types of important questions are most likely to appear from Class 8 Science Chapter 13 – Our Home Earth: A Unique Life Sustaining Planet?

Expect questions as MCQs, very short, short, long, and case-based formats from this chapter. Focus areas often include characteristics that make Earth unique, conditions for life, atmosphere and biosphere, and planetary comparisons. Practicing these question types helps prepare for exam-focused patterns and common CBSE formats.

Q: 2. How should I answer long questions on ‘Our Home: Earth, A Unique Life Sustaining Planet’ to get full marks?

To score well in long answers, use a structured format with step marking and all value points. Start with an introduction, mention key terms like atmosphere, water, life-supporting factors, and present information in well-labelled points or paragraphs. Always underline keywords and give labeled diagrams if mentioned.

Q: 3. What are some high-weightage topics in this chapter for important questions?

High-weightage topics include:Features making Earth unique (air, water, temperature)Atmosphere and biosphere roleWhy other planets can't support lifeImportance of water in sustaining life Revise these topics using question–answer formats for better retention.

Q: 4. Do diagrams or labelled maps appear in important questions for this Class 8 Science chapter?

Yes, labelled diagrams and map-based questions may appear, usually for 1–2 marks. Typical diagrams include Earth’s layers, the atmosphere, or water cycle. Practice drawing clear, neat, and well-labelled diagrams to secure quick marks in NCERT-based questions.

Q: 5. Where can I get a PDF of the important questions and answers for ‘Our Home Earth: A Unique Life Sustaining Planet’?

You can find a free PDF download of important questions with answers for this chapter on trusted educational platforms like Vedantu. This PDF includes exam-focused questions, answers, and quick revision notes for Class 8 Science Chapter 13. Use it for regular and offline revision.

Q: 6. What are common mistakes to avoid while answering important questions from this chapter?

Avoid missing key terms such as biosphere, atmosphere, life-supporting conditions, writing incomplete definitions, or skipping diagrams if asked. Do not just list points—explain briefly. Check that you address exactly what the question demands for each mark-type.

Our Home Earth A Unique Life Sustaining Planet Class 8 Question Answer with Stepwise Solutions

Welcome to Important Questions Class 8 Science Chapter 13 Our Home Earth A Unique Life Sustaining Planet. Here, you will find our home: earth, a unique life sustaining planet class 8 question answer handpicked for all exam needs. This page is perfect for students searching clear answers for Chapter 13 in Science for CBSE Class 8.

This chapter explains why Earth is called a unique planet. You can find our home: earth, a unique life sustaining planet notes class 8 and other important resources. With Vedantu’s Important Questions with Answers, each topic is covered in a simple way to match CBSE patterns.

Use these questions to practice short, long, and extra answers easily. All answers are exam-ready and help revise quickly. Click to download the Important Questions Class 8 Science Chapter 13 PDF for free and study anytime.

Our Home Earth A Unique Life Sustaining Planet Class 8 Question Answer with Stepwise Solutions

1. Multiple choice questions.

Q1. Which of the following is the most important reason why the Earth can support life?

(a) Its size is very small compared to other planets
(b) It has a thick atmosphere and ideal distance from the Sun
(c) Its surface is made entirely of water
(d) It does not have an ozone layer

Answer: (b) It has a thick atmosphere and ideal distance from the Sun

Q2. The “Goldilocks zone” refers to:

(a) The hottest region around a star
(b) The region too far from a star to have water
(c) The range where water exists as a liquid
(d) The interior of the Sun

Answer: (c) The range where water exists as a liquid

Q3. Which gas largely contributes to the greenhouse effect on Venus?

(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Hydrogen

Answer: (c) Carbon dioxide

Q4. Which of the following protects us from harmful ultraviolet (UV) rays of the Sun?

(a) Greenhouse gases
(b) Ozone layer
(c) Carbon dioxide
(d) Water vapour

Answer: (b) Ozone layer

Q5. Which is an example of geodiversity?

(a) Different types of birds in a forest
(b) Different landforms like mountains, valleys, and deserts
(c) Monsoon rain patterns
(d) Types of ocean plankton

Answer: (b) Different landforms like mountains, valleys, and deserts

2. Very Short Answer (VSA).

Q6. What is the "crust" of the Earth?

Answer: The crust is the thin outermost layer of the Earth on which all living organisms exist. It is like the skin of an apple compared to the whole Earth.

Q7. Name two main gases present in the Earth’s atmosphere.

Answer: Nitrogen and oxygen are the two main gases found in the Earth's atmosphere.

Q8. Define the term ‘habitable zone’.

Answer: The habitable zone is the region around a star where the temperature allows water to exist in liquid form, making life possible.

Q9. What does geodiversity mean?

Answer: Geodiversity refers to the variety of landforms, rocks, soils, and natural features present on Earth.

Q10. Name two methods of asexual reproduction in plants.

Answer: Two methods of asexual reproduction in plants are vegetative propagation by stem cuttings and tubers (like potato eyes).

3. Short Answer Questions.

Q11. Why is the greenhouse effect important for sustaining life on Earth?

Answer: The greenhouse effect is necessary because it keeps Earth’s temperature just right for life. Without it, the planet would be too cold, and water would freeze. The greenhouse gases trap heat radiated by the Earth, preventing loss of warmth into space.

Q12. Explain how plants and animals depend on each other for survival on Earth.

Answer: Plants produce oxygen and food through photosynthesis, which animals use for breathing and eating. Animals exhale carbon dioxide needed by plants. Decomposers help recycle nutrients, keeping the cycle balanced and supporting all life forms.

Q13. State two important roles of the Earth’s magnetic field for living beings.

Answer: The Earth's magnetic field protects living beings by deflecting harmful cosmic rays and solar wind particles. It also helps prevent the loss of our atmosphere, helping maintain the conditions needed for life.

Q14. How does deforestation affect the balance of life on Earth?

Answer: Deforestation destroys habitats, reduces rainfall, causes soil erosion, and upsets air quality, impacting climate, biodiversity, and the survival of many species. It disturbs the Earth's delicate balance by breaking natural cycles.

4. True or False Questions.

Q15. Venus is the hottest planet in the solar system due to its thick atmosphere of carbon dioxide.

Answer: True

Q16. All types of reproduction require two parents.

Answer: False

Q17. Oceans form a part of the biosphere.

Answer: True

Q18. The ozone layer allows all sunlight, including harmful UV rays, to reach Earth.

Answer: False

3. Fill in the Blanks Questions.

Q19. The layer of gases surrounding the Earth is called the ______.

Answer: atmosphere

Q20. Plants take in carbon dioxide and release ______ during photosynthesis.

Answer: oxygen

Q21. The protective shield against harmful particles from the Sun and other cosmic rays is the Earth's ______ field.

Answer: magnetic

Q22. When living organisms break down dead plants and animals, they help return ______ to the soil.

Answer: nutrients

Benefits of Understanding Earth's Unique Conditions for Life

Explore our home: earth, a unique life sustaining planet class 8 question answer topics to build strong science fundamentals. These practical insights prepare students for class 8 science chapter 13 our home: earth, a unique life sustaining planet question answer patterns and deepen real-world understanding.

Studying our home: earth, a unique life sustaining planet notes class 8 helps in revision and quick learning. These short notes, extra question answers and worksheets boost logical thinking and keep students ready for both school tests and competitive exams using clear explanations.

With resources like our home earth a unique life sustaining planet class 8 extra question answer and class 8 worksheet, understanding key topics becomes simple. Access bite-sized PDFs, focused questions and important summaries for better retention—making science both interesting and accessible for every learner.

FAQs on Important Questions and Answers for Class 8 Science Chapter 13 Our Home Earth A Unique Life Sustaining Planet 2025-26

1. What types of important questions are most likely to appear from Class 8 Science Chapter 13 – Our Home Earth: A Unique Life Sustaining Planet?

Expect questions as MCQs, very short, short, long, and case-based formats from this chapter. Focus areas often include characteristics that make Earth unique, conditions for life, atmosphere and biosphere, and planetary comparisons. Practicing these question types helps prepare for exam-focused patterns and common CBSE formats.

2. How should I answer long questions on ‘Our Home: Earth, A Unique Life Sustaining Planet’ to get full marks?

To score well in long answers, use a structured format with step marking and all value points. Start with an introduction, mention key terms like atmosphere, water, life-supporting factors, and present information in well-labelled points or paragraphs. Always underline keywords and give labeled diagrams if mentioned.

3. What are some high-weightage topics in this chapter for important questions?

High-weightage topics include:

Features making Earth unique (air, water, temperature)
Atmosphere and biosphere role
Why other planets can't support life
Importance of water in sustaining life

Revise these topics using question–answer formats for better retention.

4. Do diagrams or labelled maps appear in important questions for this Class 8 Science chapter?

Yes, labelled diagrams and map-based questions may appear, usually for 1–2 marks. Typical diagrams include Earth’s layers, the atmosphere, or water cycle. Practice drawing clear, neat, and well-labelled diagrams to secure quick marks in NCERT-based questions.

5. Where can I get a PDF of the important questions and answers for ‘Our Home Earth: A Unique Life Sustaining Planet’?

You can find a free PDF download of important questions with answers for this chapter on trusted educational platforms like Vedantu. This PDF includes exam-focused questions, answers, and quick revision notes for Class 8 Science Chapter 13. Use it for regular and offline revision.

6. What are common mistakes to avoid while answering important questions from this chapter?

Avoid missing key terms such as biosphere, atmosphere, life-supporting conditions, writing incomplete definitions, or skipping diagrams if asked. Do not just list points—explain briefly. Check that you address exactly what the question demands for each mark-type.

7. How can I practice important questions for ‘Our Home: Earth, A Unique Life Sustaining Planet’ to improve exam accuracy?

Practice with time-bound sets of MCQs, short, and long answer questions from this chapter. After attempting, check step-marking schemes and verify you highlighted all keywords. Regular practice with worksheets and sample papers will increase accuracy and speed in CBSE exams.