Important Questions for Class 8 Science Chapter 13: Our Home - Earth, A Unique Life Sustaining Planet

Science exams require a clear understanding of concepts along with regular revision. However, many students find it challenging to remember important points from a complete chapter, identify exam-relevant topics, and practise the right questions before examinations. This can make revision time-consuming and less effective.

The Class 8 Science Chapter Important Questions help you overcome these challenges by providing important practice questions from Our Home - Earth, A Unique Life Sustaining Planet. By solving these questions, you can revise key concepts, improve your understanding, strengthen answer-writing skills, and prepare confidently for your Science exams.

Important Questions for Class 8 Science Chapter 13

Solving these important questions helps you revise the chapter thoroughly, identify important concepts, and improve your confidence before the examination.

Q1 The Earth’s crust is compared to the skin of an apple because it is: 

(A) Very colourful 

(B) Thin compared to the whole planet 

(C) Made of liquid 

(D) Found only at the poles 

Q2 Which planet does not have an atmosphere?

 (A) Earth (B) Mercury 

(C) Venus (D) Saturn 

Q3 Which one of the following planets is made up of gas? 

(A) Earth 

(B) Mars 

(C) Jupiter

 (D) Mercury 

Q4 Which of the following statements correctly describes why Earth supports life? 

(A) It is closest to the Sun 

(B) It has extreme temperatures 

(C) It has a suitable atmosphere, water, and moderate temperature 

(D) It is made of gases 

Q5 The Earth appears blue when seen from space because 

(A) of its magnetic field 

(B) sunlight is scattered by the atmosphere 

(C) most of its surface is covered with water 

(D) it has a thick atmosphere 

Q6 What is the "habitable zone" (or "Goldilocks zone") around a star? 

(A) The specific area where a planet receives the most direct sunlight. 

(B) The range of distances from a star where liquid water can exist. 

(C) The region where a planet is large enough to have a magnetic field. 

(D) The part of a solar system where there are no large asteroids. 

Q7 What would happen if Earth’s gravity were much stronger due to a larger size? 

(A) The air would escape into space 

(B) It would be difficult for life to survive as gravity would crush living beings 

(C) The atmosphere would disappear 

(D) Oceans would dry up 

Q8 Which of these is an example of vegetative propagation? 

(A) Planting seeds of wheat 

(B) Cutting a money plant stem and planting it 

(C) Growing a rose plant from a flower 

(D) Growing mango tree from leaves 

Q9 Which environmental agreement helped reduce CFCs that harm the ozone layer?

(A) Paris Agreement

(B) Earth Summit

(C) Montreal Protocol

(D) Kyoto Protocol

Q10 In birds, after fertilisation the embryo develops

  (A) inside the mother’s body 

(B) in water 

(C) inside the egg after it is laid 

(D) on the ground surface 

Q11 Define geosphere and explain its role in supporting life on Earth. 

Q12 How does pollution in one Earth system affect individuals can reduce their carbon footprint. 

the others? Give one example. 

Q13 Write two ways in which biodiversity contributes to climate stability. 

Q14 Explain how human activities contribute to climate change and discuss three ways 

Q15 Describe the triple planetary crisis and explain why it is considered the biggest threat to Earth. 

Q16 Describe how improper use of fertilizers harms soil and affects food chains. 

Download Class 8 Science Chapter 13 Important Questions PDF

Revising important questions before exams helps you focus on key concepts and improve your preparation. The Class 8 Science Chapter 13 Important Questions PDF by Physics Wallah provides practice questions from Our Home - Earth, A Unique Life Sustaining Planet to help you revise the chapter, test your understanding, and prepare more effectively.

How to Prepare Class 8 Science Chapter 13 Effectively

Preparing this chapter with the right approach can help you understand important concepts and remember key points for exams. Focused revision, regular practice, and clear understanding of topics can make your Science preparation more effective.

1. Understand the Chapter Concepts

Start by reading the chapter carefully and focus on topics related to Earth, its atmosphere, water, and conditions that support life.

2. Practise Important Questions

Solve different types of questions, including short and long answers, to improve your understanding and recall.

3. Revise Regularly

Make short notes of important points and revise them frequently to remember concepts for a longer time.

4. Test Your Preparation

Try solving questions without looking at answers. This helps you check your preparation level and improve your confidence.

Building a strong foundation in Science requires clear concept understanding and consistent revision. The Class 8 Science Chapter 13 Important Questions PDF supports your preparation by helping you practise key questions and revise important topics from Our Home - Earth, A Unique Life Sustaining Planet. With PW learning support, you can enhance your preparation and approach exams with greater confidence.