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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:
Also Read,
NCERT Exemplar for class 9 science chapter 14 Natural Resources
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 of the atmosphere.
Whereas, the atmosphere of Earth is made of nitrogen and 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.
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.
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
Topic 14.3 Mineral Riches in the soil
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.
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).
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
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.
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.
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.
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.
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.
The important topics of NCERT Solutions Class 9 Science Natural Resources are listed below:
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.
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 |
The advantage of the ncert solutions for class 9 science chapter 14 are given below:
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.
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.
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.
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