Careers360 Logo
NCERT Solutions for Class 9 Science Chapter 14 Natural Resources

NCERT Solutions for Class 9 Science Chapter 14 Natural Resources

Edited By Irshad Anwar | Updated on Oct 07, 2023 03:08 PM IST

Chapter 14: Natural Resources | NCERT Science Class 9 Solutions PDF Download

NCERT Solutions for Class 9 Science Chapter 14 Natural Resources: These natural resources class 9 solutions are part of the NCERT Solutions for Class 9 Science. What do you understand when you hear about natural resources? Have you ever thought about these resources on earth? When you go through class 9 science chapter 14, you will learn about the natural resources present on the earth. CBSE NCERT Solutions for Class 9 Science Chapter 14 Natural Resources deal with all the important questions mentioned in the chapter. You will get queries based on such concepts in class 9 science chapter 14 question answer. For more understanding of this chapter, you should also check Chapter 14 Natural Resources Class 9 notes, Science. In this article, you will get NCERT Solutions for Class 8 Science Chapter 14.

Class 9 Science Chapter 14 question answer: When we talk about natural resources, we mean to say that we can use whatever comes from the natural environment, such as water, air, wood, oil, wind energy, natural gas, iron, and coal. Through this article, you can clear your doubts and get a better understanding of the concepts from Chapter 14 Class 9 science. Along with solutions for NCERT class 9 science chapter 14 Natural Resources, you will get NCERT Solutions for other chapters as well.

NCERT Solutions for Class 9 Science: All the exercises and topic-wise NCERT Solutions for Natural Resources Class 9 are mentioned below:

NCERT Solutions for Class 9 Science Chapter 14 Natural Resources

Download PDF

Also Read,

NCERT Exemplar for class 9 science chapter 14 Natural Resources

NCERT solutions for class 9 science chapter 14 Natural Resources: Solved In-Text Question-

NCERT Solutions Class 9 Science Natural Resources - Topic 14.1 The Breath of Life: Air

Q1. How is our atmosphere different from the atmospheres on Venus and Mars?

Answer:

Earth's atmosphere is different from the atmosphere on Venus and Mars.

The major component of the atmosphere on Venus and Mars is found to be carbon dioxide constituting up to 95-97 \% of the atmosphere.

Whereas, the atmosphere of Earth is made of 79\% nitrogen and 20\% oxygen, with only a small fraction of carbon dioxide.

Q 2. How does the atmosphere act as a blanket?

Answer:

The atmosphere is the thick blanket of air that covers the whole of the Earth. The atmosphere acts as a blanket in the following ways:

(i) It prevents the harmful UV rays from reaching the Earth's surface.

(ii) It helps in maintaining the surface temperature during day and night.

(iii) It protects Earth from celestial objects like asteroids.

Q 3. What causes winds?

Answer:

The uneven heating of the atmosphere in different regions of the Earth creates some regions of low pressure and some regions of high pressure.

Air from the high-pressure region moves into the area of low pressure. This movement of air from one region to the other creates winds.

Q 4. How are clouds formed?

Answer:

The heating of the water bodies during the day leads to the evaporation of a large amount of water which then rises up with the hot air.

As the air rises, it expands and cools. This cooling causes the water vapour in the air to condense in the form of tiny droplets around dust particles.

These tiny droplets cluster themselves to form clouds. When these water-drops become heavy, they precipitate and fall down as rain.

In a nutshell, evaporation and condensation are the two main processes involved in the formation of clouds.

Q5. List any three human activities that you think would lead to air pollution.

Answer:

Three human activities that would lead to air pollution are:

i) Emission of harmful gases and dust particles from vehicles.

ii) Combustion of fossil fuels like coal, petroleum releasing oxides of nitrogen and sulphur.

iii) The smoke released from industries containing harmful gases like sulphur dioxide, oxides of nitrogen.

Natural Resources: NCERT Class 9 Science Chapter 14 Solutions

Topic 14.2 Water: A wonderful Liquid

Q1. Why do organisms need water?

Answer:

Organisms need water for the following activities:

(1) All chemical reaction at the cellular level occurs with water as the solvent.

(2) Water acts as a medium for the transportation of substances in our body.

(3) Terrestrial animals require fresh water for the intake of minerals

(4) Water is required to get rid of waste from the body in the form of sweat and urine.

(5) Water is essential for photosynthesis

CBSE Solutions - NCERT Class 9 Science Chapter 14 Question Answer

Topic 14.3 Mineral Riches in the soil

Q1. How is soil formed?

Answer:

The breaking of rocks near the Earth's surface by various physical, chemical and biological processes over a long period of time leads to the formation of soil.

Factors that help in the formation of soil are:

(i) Sun: Sun heats up rocks during the day causing them to expand. At night these rocks cool down and contract. This unequal expansion and contraction causes cracks in the rocks.

(ii) Water: Water during rainfall after enter these cracks, may freeze and cause the crack to widen. Also, Flowing water wears away rocks over long periods of time breaking it into smaller and smaller particles.

(iii) Wind: Strong winds erode rocks down, which rub with each other.

(iv) Living Organisms: Lichen growing on the surface of the rock, releases certain substances that cause the rock surface to powder down and form a thin layer of soil.

Q2. What is soil erosion?

Answer:

The removal of the top layer of fertile soil by air, wind, and water is called soil erosion .

Q 3. What are the methods of preventing or reducing soil erosion?

Answer:

The methods of preventing or reducing soil erosion are:

(i) Afforestation or planting of trees. The roots go deep into the ground and hold the soil thus preventing soil erosion.

(ii) Growth of vegetation. Vegetation ensures that the soil does not get carried away by rainwater or wind.

NCERT Textbook Solutions for class 9 science chapter 14 Natural Resources

Topic 14.5 Ozone Layer

Q1. What are the different states in which water is found during the water cycle?

Answer:

The different states in which water is found during the water cycle are:

In solid-state as ice/snow.

In a liquid state as rainwater.

In a gaseous state as water vapor in the atmosphere.

Q 2. Name two biologically important compounds that contain both oxygen and nitrogen.

Answer:

Two biologically important compounds that contain both oxygen and nitrogen are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

Q 3. List any three human activities which would lead to an increase in the carbon dioxide content of the air.

Answer:

Three human activities which would lead to an increase in the carbon dioxide content of air are:

(i) Combustion of fossil fuels like coal and petroleum releases carbon dioxide in the atmosphere.

(ii) Deforestation leads to an increase in carbon dioxide content in the atmosphere.

(iii) The smoke released from industries contains many harmful gases including carbon dioxide into the atmosphere.

Q 4. What is the greenhouse effect?

Answer:

The greenhouse effect is the phenomenon of warming of atmosphere by gases like carbon dioxide and methane.

These gases trap the heat during day time thus keeping the night warm.

Q 5. What are the two forms of oxygen found in the atmosphere?

Answer:

Two forms of oxygen found in the atmosphere are:

(i) diatomic oxygen O 2

(ii) triatomic Ozone O 3

NCERT Solutions for Class 9 Science Chapter 14 Natural Resources- Solved Exercise Questions

Science Chapter 14 Class 9 Question Answer are explained below in detail for better experience.

Q 1 Why is the atmosphere essential for life?

Answer:

The atmosphere is very essential for life in the following ways:

(1) It maintains the temperature of Earth and prevents the heat from escaping during the night.

(2) The atmosphere contains nitrogen, oxygen, carbon dioxide which are required for various life processes.

(3) Oxygen in the atmosphere is required for burning, combustion and essential for respiration.

(4) The ozone layer in the stratosphere prevents UV rays from the sun to reach the Earth's surface.

(5) It protects Earth from celestial objects like asteroids and meteors.

Q2. Why is water essential for life?

Answer:

Water is essential for life for the following reasons:

(1) All chemical reaction at the cellular level occurs with water as the solvent.

(2) Water acts as a medium for the transportation of substances in our body.

(3) Terrestrial animals require fresh water for the intake of essential minerals.

(4) Water is required to get rid of waste from the body in the form of sweat and urine.

(5) Water is essential for photosynthesis by which plants make foo d.

Q3. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?

Answer:

Soil is a complex mixture, comprising of minerals, organic matter, water, and living organisms. It determines the diversity of life in any area.

Plants need soil for support and also get nutrients to prepare their own food. Herbivore obtains food from these plants. And, a carnivore is directly dependent on the herbivore.

Aquatic animals are also dependent on the soil as a resource. These animals depend on aquatic plants for food, which in turn, requires nutrients from the soil.

Hence, all living organisms directly or indirectly depend on the soil.

Q4. You have seen weather reports on television and in newspapers. How do you think we are able to predict the weather?

Answer:

The meteorological department predicts the weather. Various instruments are used to collect data like temperature, rainfall, humidity.

Rainfall is measured by a rain gauge. Satellites are used to monitor clouds and predict climate.

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 pollution?

Answer:

Yes, isolating human activities which leads to increasing levels of pollution of the air, water-bodies, and soil to specific and limited areas would help in reducing pollution.

For example: Having heavy industries outside the main city will drastically decrease the effect of pollution on the population.

Q 6. Write a note on how forests influence the quality of our air, soil and water resources.

Answer:

(i) Influence of forests on quality of air:

-Forests maintain an oxygen level in the atmosphere. And also reduces the carbon dioxide level.

-Forests maintain the temperature of the environment.

(ii) Influence of forests on quality of soil:

-The roots of the trees bind the soil together thus reducing soil erosion.

-Forests help in maintaining the nutrient cycle.

(iii) Influence of forests on quality of water:

-Forests help in conserving water thus increasing its availability.

-Forests maintain the water cycle in the atmosphere.

Science Class 9 Chapter 14: Important Formulas and Diagrams + eBook link

Did you know that some students perform better on their CBSE exams than others, despite having less time? The fact that they each employ various learning and revision strategies and plans explains this clearly. In addition to the Science Class 9 Chapter 14 Question Answer, gathering the most important formulas and concepts in one place can help you finish your NCERT science revision faster. Once the ideas are understood, this will enable a quick glance and prompt immediate remembrance.

This helpful ebook was put together by subject matter experts at Careers360 and includes a list of all the critical formulas for NCERT Science Class 9. You can save time and quickly review each important formula with examples that you might encounter on your exams by using this ebook.

Important Topics in Solution of Natural Resources Class 9

The important topics of NCERT Solutions Class 9 Science Natural Resources are listed below:

  • 14.1 - the Breath of Life: Air
  • 14.1.1 - the Role of the Atmosphere in Climate Control
  • 14.1.2 - the Movement of Air: Winds
  • 14.1.3 - Rain
  • 14.1.4 - Air Pollution
  • 14.2 - Water: a Wonder Liquid
  • 14.2.1 - Water Pollution
  • 14.3 - Mineral Riches in the Soil
  • 14.4 - Biogeochemical Cycles
  • 14.4.1 - the Water-cycle
  • 14.4.2 - the Nitrogen-cycle
  • 14.4.3 - the Carbon-cycle
  • 14.4.3 - (i) the Greenhouse Effect
  • 14.4.4 - the Oxygen-cycle
  • 14.5 - Ozone Layer

NCERT Solution for Class 9 Science Chapter 14 Natural Resources - Points to Remember

  • As you know, water covers 75% of the earth’s surface and is also found underground. These comprise the hydrosphere.
  • The air is the mixture of gases that covers the whole of the earth like a blanket, which is called the atmosphere.
  • Living things are found where land, air, and water exist.
  • Students can refer to the Science Chapter 14 Class 9 Question Answer to assess themselves on these topics.
  • This life-supporting zone of the earth where the atmosphere, the hydrosphere, and therefore the lithosphere interact and make life possible, is known as the biosphere.
  • In this NCERT Class 9 Science Chapter 14 Solutions, you will study these abiotic components in detail in order to understand their role in sustaining life on earth.
  • Quality of life and biodiversity are affected by pollution of the air, water, and soil.
  • For saving our natural resources we need to conserve our natural resources and use them in a proper manner.
  • Class 9 Science Chapter 14 Question Answer are easy to download and use offline.

Ch 14 Science Class 9 NCERT Solutions: Have you ever thought about how rain is formed? Rain is made up of droplets of water that form from clouds, and rainfall patterns depend on the prevailing wind patterns in an area. In this chapter, you will also study rain, ozone layers, and biogeochemical cycles. If you are having difficulty solving the exercise in the NCERT Textbook, please go through Science Chapter 14 Class 9 Question Answer provided here.

NCERT Solutions for Class 9 Science: Chapter-wise

Chapter No. Chapter Name
Chapter 1 Matter in Our Surroundings
Chapter 2 Is Matter Around Us Pure
Chapter 3 Atoms and Molecules
Chapter 4 Structure of The Atom
Chapter 5 The Fundamental Unit of Life
Chapter 6 Tissues
Chapter 7 Diversity in Living Organisms
Chapter 8 Motion
Chapter 9 Force and Laws of Motion
Chapter 10 Gravitation
Chapter 11 Work and Energy
Chapter 12 Sound
Chapter 13 Why Do We Fall ill?
Chapter 14 Natural Resources
Chapter 15 Improvement in Food Resources

NCERT Solutions Class 9: Subject-wise

Benefits of NCERT Solutions for Class 9 Science Chapter 14 Natural Resources:

  • The Natural Resources Class 9 PDF is very useful from an exam perspective. Science Class 9 Chapter 14 Question Answer are created by experts, and the language of the solutions is very easy to understand.
  • Science Ch 14 Class 9 NCERT Solutions are created as per CBSE guidelines.
  • Solutions for Class 9 Science Chapter 14 will help you complete your homework and assignments as well.
  • If you have any doubts regarding Natural Resources Class 9 Solutions or any other chapter of Class 9 science and maths, you can directly ask our faculty.
  • Natural resources class 9th NCERT solutions created by the experienced faculties and experts.
  • The Class 9 Science Chapter 14 NCERT Solutions PDF is easy to download and use offline.
  • Natural resources Class 9 questions and answers are prepared by subject experts as per the latest CBSE syllabus.
  • Class 9 Natural resources NCERT solutions develop a logical approach and methodology towards science.

Also check the NCERT Books and NCERT Syllabus here:

Frequently Asked Questions (FAQs)

1. what are the benefits of the solutions for chapter 14 class 9 science?

The advantage of the ncert solutions for class 9 science chapter 14 are given below: 

  • Natural resources class 9 pdf is very useful from an exam perspective. They are created by experts and the language of the solutions is very easy to understand.  
  • Solutions for ch 14 science class 9are created as per CBSE guidelines.  
  • Solutions for class 9 science chapter 14 will help you to complete your homework and assignment as well. 
2. How to score well in the examination of class 9 science?

To score well in the examination, follow the NCERT syllabus and solve the exercise given in the NCERT Book. To practice more problems, students must refer to NCERT Exemplar.

3. what causes winds class 9?

Differences in atmospheric pressure are what create the wind. When there is a difference in atmospheric pressure, air moves from the area of higher pressure to the area of lower pressure, causing winds to blow in various directions and at different speeds.

4. What are natural resources class 9?

These are resources that are derived naturally from the environment and without human intervention. Air, sunlight, water, soil, stone, plants, animals, and fossil fuels are typical examples of natural resources.

Articles

Get answers from students and experts

A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg

 

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)

K/2\,

Option 2)

\; K\;

Option 3)

zero\;

Option 4)

K/4

In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)

0.02

Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)

Molality

Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

Back to top