Table of Contents
Welcome to the study of Natural Resources, which is Chapter 14 in the Class 9 Science syllabus. This chapter helps students understand the various types of natural resources available on Earth, such as air, water, soil, minerals, and forests. It highlights their importance and how we can use them wisely.
To support your learning, we provide NCERT Solutions for Class 9 Science that include detailed explanations and answers to questions from this chapter. You can find the Natural Resources Class 9 PDF for easy access to the content. Additionally, the Class 9 Chapter 14 Natural Resources PDF offers a comprehensive overview of key concepts.
If you are looking for specific help with your studies, our Class 9 Science Chapter 14 Natural Resources question answer section will guide you through important questions and provide clear solutions.
Natural Resources Class 9 PDF Download
Welcome to the topic of Natural Resources in Class 9! This chapter is important because it helps us learn about the resources that nature gives us. Natural resources include things like air, water, soil, minerals, and forests. These resources are essential for our everyday lives.
In Class 9 Chapter 14, we will explore how these resources are formed and why they are important. You can easily download the Natural Resources Class 9 PDF to get all the key information you need for this chapter.
If you need extra help with understanding the topics or solving questions, check out the NCERT Solutions for Class 9 Science. These solutions provide clear answers and explanations for the questions in your textbook.
By studying this chapter, you will learn how to take care of our natural resources and why it’s important to protect them for the future. Download the Class 9 Chapter 14 Natural Resources PDF today and start your learning journey!
Class 9 Science Chapter 14 Natural Resources Question Answer
Class 9 Science Chapter 14 focuses on Natural Resources, exploring their types, uses, and importance in our daily lives. This chapter includes various questions and answers to help students understand key concepts better. Practicing these questions will enhance your knowledge and prepare you for exams effectively. Let’s dive into the topic!
Q1.Why is the atmosphere essential for life?
Ans. i) Atmosphere contains various gases like O2 , CO2, N2 which are required for various life processes by plants and animals.
ii) CO2 gas is used by plants to prepare food by the process called
iii) Oxygen is required for burning, combustion and respiration.
iv) Ozone layer is acting as a protective layer, which avoids / prevents harmful UV rays to enter the earth’s atmosphere.
v) CO2 dissolved in water in the form of carbonates, is utilised by marine animals to form shells.
vi) Hence, we can say that atmosphere is essential for life.
Q2. Why is water essential for life?
Ans. Water is essential for :
i) all cellular activities
ii) transportation of substances
iii) digestion
iv) absorption of nutrients
v) maintaining the body temperature
vi) excretion etc.
Q3. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
Ans. i) All living organisms directly or indirectly depend on the soil.
ii) Plants obtain water and minerals from the soil and prepare food for animals.
iii) Number of insects, worms like earthworms and animals like rabbits, rats etc. live in the soil.
iv) Even the organisms living in water too depend on soil for their needs.
Q4. You have seen weather reports on television and in news paper. How do you think we are able to predict the weather?
Ans. i) We can predict the weather based on the temperature, humidity, wind speed of a given time frame, air pressure and all other factors of a particular region.
ii) The information is collected by remote sensing and weather forecasting satellites and then sent to the meteorological departments to prepare weather reports.
Q5. We know that many human activities lead to increasing levels of pollution of the air, water bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollutions?
Ans. Yes, isolating the human activities which cause pollution will help in minimising the levels of pollution to some extent.
Q6. Write a note on how forests influence the quality of our air, water and soil resources.
Ans. Air :
i) Forests help in purifying the air by absorbing pollutants.
ii) They add oxygen to the air and takes carbon dioxide gas during
iii) They control and reduce the Greenhouse effect.
iv) The transpiration helps in the formation of clouds and maintains the temperature of surrounding area.
Soil :
i) Plants in the forest hold the soil and prevent soil erosion.
ii) They add nutrients to the soil due to the decomposition of huge vegetation present in forest.
Water :
Forests help in bringing rain and increasing the level of underground water.
Q7. How is our atmosphere different from the atmosphere of Venus and Mars?
Ans. i) Our atmosphere contains gases like nitrogen, oxygen, carbon dioxide, water vapour and other gases in a very small amounts. This makes the existence of life possible on the earth.
ii) Whereas atmosphere of Venus and Mars have about 95% of carbon dioxide. So existence of life is not possible.
Q8. How does the atmosphere act as a blanket?
Ans. i) Atmosphere maintains the temperature on the surface of earth during day and night times.
ii) It contains ozone in the upper layer which protects life from harmful ultra-violet
This is how atmosphere acts as a blanket to the earth.
Q9. What causes winds ?
Ans. i) The uneven heating of the atmosphere in different regions of the earth causes winds.
ii) The rotation of earth and presence of mountain ranges also help in the formation of winds, and its blowing direction.
Q10.How are the clouds formed ?
Ans. i) During day time, water from different sources like pond, lake, river, sea, well, etc. get evaporated and rises up along with the hot air.
ii) At a particular height, the air cools and water vapour condenses to form minute droplets to form clouds.
Q11.List any three human activities that you think would lead to air pollution.
Ans. i) Burning of fuels like coal, petrol, diesel
ii) Deforestation
iii) Industrialisation
Q12. Why do organisms need water ?
Ans. i) Major portion of each and every living organism is composed of water.
ii) All cellular processes take place in water medium.
iii) All the reactions that take place within our body and within the cells occur between substances that are dissolved in water.
iv) Water also helps to transport substances from one part of the body to the other.
v) Hence, organisms need to maintain the level of water within their bodies in order to stay alive.
Q13. What is the major source of freshwater in the city / town / village where you live ?
Ans. i) The major sources of freshwater in the city / town / village is the underground water which is mostly taken out with the help of hand-pumps or tube-wells.
ii) The rivers flowing in the nearby areas, lakes and ponds also serve as the source of freshwater.
Q14. Do you know of any activity which may be polluting this water source ?
Ans. There are many activities which cause pollution of water sources such as :
i) dumping of waste from factories, sewage from our towns and cities into rivers or lakes.
ii) discharging hot water from cooling towers into the water bodies which affect the breeding capacity of aquatic organisms.
Q15. How is soil formed ?
Ans. Soil is formed by breaking of rocks at or near the surface of the earth by various physical, chemical and some biological processes.
Q16.What is soil erosion?
Ans. The loss of top soil by air, wind and water is called soil erosion.
Q17. What are the methods of preventing or reducing soil – erosion ?
Ans. Soil erosion can be prevented by :
i) proper soil management
ii) afforestation
iii) growing grass plants on hill slopes, sea shores, etc.
iv) crop rotation method
v) preventing overgrazing
Q18. What are the different states in which water is found during the water cycle ?
Ans. During water cycle, water exists in three states. They are – liquid (water), gas (water vapour) and solid (snow).
19. Name two biologically important compounds that contain both Oxygen and Nitrogen.
Ans. Two biologically important compounds that contain both oxygen and nitrogen are DNA (Deoxyribosenucleic Acid) and Proteins.
20. List any three human activities which would lead to an increase in the carbon dioxide content of air.
Ans. i) Burning of fuels like coal, petrol, diesel, etc.
ii) Industrialisation.
iii) Deforestation.
Q21. What is the Greenhouse effect ?
Ans. The phenomenon of natural warming of the Earth’s surface is called Greenhouse affect.
Q22. What are the two forms of oxygen found in the atmosphere ?
Ans. i) Elemental oxygen is normally found in the form of a diatomic molecule (O2) in the lower regions of the atmosphere to the extent of 21%. It is non-poisonous form of oxygen.
ii) But in the upper layers of the atmosphere (stratosphere), it occurs in the form of ozone, containing three atoms of oxygen and having the molecular formula O3.
iii) Ozone is the poisonous form of oxygen but helps in preventing the entry of ultraviolet rays into the earth’s atmosphere.
Chapter 14 – Natural Resources NCERT Solutions for Class 9 Science
The role of the atmosphere, the importance of air for a living, and other experiments and facts are explained in NCERT Class 9 Science Chapter 14 Natural Resources. It explains why the earth is unlike other planets such as Venus and Mars. This chapter also includes a variety of activities to help students grasp the ideas. NCERT Class 9 Science Chapter 14 Natural Resources discusses why water is referred to as a “wonder liquid” and the significance of rain. This chapter provides a thorough understanding of the water and nitrogen cycles. NCERT Solutions explain the solution in an easy-to-understand manner so that students of all levels can understand it. NCERT Class 9 Science Chapter 14 Natural Resources is part of Unit 4 and can easily earn you 6 points. The following are some of the themes covered in this chapter:
- Air is the source of life (5 questions)
- Water is a miraculous liquid (3 questions)
- mineral abundance in the soil (3 questions)
- The layer of ozone (5 questions)
- questions for the end of the chapter (6 questions)
Chapter 14 – Natural Resources NCERT Solutions for Class 9 Science
- The importance of atmosphere is explained in NCERT Solutions for Class 9 Chapter 14.
- It represents the significance of rain and water.
- Winds are caused by the uneven heating of air over land and sea bodies.
- Explains how pollution of the air and water occurs in nature.
- The importance of manures and fertilizers, as well as their impacts
NCERT Solutions for Class 9 Science Chapter 14 – Natural Resources: Significant Features:
All of the questions in the relevant NCERT textbooks are entirely solved in this book.
- NCERT Solutions uses simple language that students can grasp.
- These answers will help you pass the CBSE exams, Science Olympiads, and other competitive exams.
- To assist students in their preparations, provide detailed solutions to all of the questions.
Class 9 Science Chapter 14 FAQs
What are the main natural resources discussed in NCERT Solutions for Class 9 Science Chapter 14?
The chapter covers essential natural resources like air, water, soil, and sunlight, explaining their importance, conservation methods, and how they support life on Earth.
How does Chapter 14 explain the importance of water as a natural resource?
The solutions describe water as a vital natural resource, focusing on its role in the water cycle, its uses in agriculture, industry, and daily life, and the need for water conservation to avoid scarcity.
What are some of the ways to conserve natural resources discussed in this chapter?
The solutions suggest various conservation methods such as reducing waste, recycling materials, preventing deforestation, and using renewable energy to sustain natural resources for future generations.
How do NCERT Solutions for Class 9 Science Chapter 14 help in understanding the greenhouse effect and global warming?
The chapter explains the greenhouse effect and its link to global warming by describing how greenhouse gases trap heat in the Earth's atmosphere, contributing to climate change and its effects on natural resources.
Where can I download the PDF for NCERT Solutions for Class 9 Science Chapter 14 - Natural Resources?
You can download the NCERT Solutions for Class 9 Science Chapter 14 in PDF format from various educational websites, including NCERT's official website and platforms like Infinity Learn and others that offer free educational resources.
