Class 9 NCERT Solutions Natural Resources

Class 9 NCERT Solutions Natural Resources with answers available in Pdf for free download. The NCERT Solutions for Class 9 Science with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 9 by CBSE, NCERT and KVS. Solutions to questions given in NCERT book for Class 9 Science are an important part of exams for Grade 9 Science and if practiced properly can help you to get higher marks. Refer to more Chapter-wise Solutions for NCERT Class 9 Science and also download more latest study material for all subjects

Natural Resources Class 9 NCERT Solutions

Class 9 Science students should refer to the following NCERT questions with answers for Natural Resources in standard 9. These NCERT Solutions with answers for Grade 9 Science will come in exams and help you to score good marks

Natural Resources NCERT Solutions Class 9

Class 9 NCERT Solutions Natural Resources - NCERT Solutions prepared for CBSE students by the best teachers in Delhi. 

Class IX  Science

Chapter 14 – Natural Resources

Question 1:

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

Answer:

Earth’s atmosphere is different from those of Venus and Mars. This difference lies essentially in their compositions. Earth’s atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours and other gases. This makes the existence of life possible on Earth. However, the atmospheres on Venus and Mars mainly consist of carbon dioxide. The amount of carbon dioxide on these planets can range from 95% to 97%.

Question 2:

How does the atmosphere act as a blanket?

Answer:

The atmosphere acts as a blanket by performing the following functions:

(a) It keeps the average temperature of the Earth fairly constant during day time and even during the course of whole year.

(b) It prevents a sudden increase in the temperature during day time.

(c) It slows down the escape of heat from the surface of the Earth into outer space during night time.

Question 3:

What causes winds?

Answer:

An uneven heating of the Earth’s surface causes winds. On being heated, air becomes lighter and rises up. As a result, a region of low pressure is created. Then, air from a high pressure region moves to a low pressure region, causing wind.

Question 4:

How are clouds formed?

Answer:

During day time, on being heated, a large amount of water evaporates from various water bodies and goes into the air. A part of this water vapour also reaches the atmosphere through biological activities such as transpiration and respiration.

Question 5:

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

Answer:

The following three human activities would lead to air pollution:

(i) Burning of fossil fuels such as coal and petroleum

(ii) Industrialization

(iii) Deforestation

 

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Chapter 1 Matter In Our Surroundings
Class 9 NCERT Solutions Matter in Our Surroundings
Chapter 2 Is Matter Around Us Pure?
Class 9 NCERT Solutions Is Matter Around Us Pure
Chapter 3 Atoms and Molecules
Class 9 NCERT Solutions Atoms and Molecules
Chapter 4 Structure Of The Atom
Class 9 NCERT Solutions Structure of the Atom
Chapter 5 The Fundamental Unit Of Life
Class 9 NCERT Solutions The Fundamental Unit of Life
Chapter 6 Tissues
Class 9 NCERT Solutions Tissues
Chapter 7 Diversity In Living Organisms
Class 9 NCERT Solutions Diversity in Living Organisms
Chapter 8 Motion
Class 9 NCERT Solutions Motion
Chapter 9 Force and Laws Of Motion
Class 9 NCERT Solutions Force and Laws of Motion
Chapter 10 Gravitation
Class 9 NCERT Solutions Gravitation
Chapter 11 Work and Energy
Class 9 NCERT Solutions Work and Energy
Chapter 12 Sound
Class 9 NCERT Solutions Sound
Chapter 13 Why Do We Fall Ill?
Class 9 NCERT Solutions Why Do We Fall Ill
Chapter 14 Natural Resources
Class 9 NCERT Solutions Natural Resources
Chapter 15 Improvement In Food Resources
Class 9 NCERT Solutions Improvement in Food Resources

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