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
How is our atmosphere different from the atmospheres on Venus and Mars?
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%.
How does the atmosphere act as a blanket?
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.
What causes winds?
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.
How are clouds formed?
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.
List any three human activities that you think would lead to air pollution.
The following three human activities would lead to air pollution:
(i) Burning of fossil fuels such as coal and petroleum
Students should free download the NCERT solutions and get better marks in exams. Studiestoday.com panel of teachers recommend students to practice questions in NCERT books and download NCERT solutions.
Click for more Science Study Material ›
|Class 9 NCERT Solutions Matter in Our Surroundings|
|Class 9 NCERT Solutions Is Matter Around Us Pure|
|Class 9 NCERT Solutions Atoms and Molecules|
|Class 9 NCERT Solutions Structure of the Atom|
|Class 9 NCERT Solutions The Fundamental Unit of Life|
|Class 9 NCERT Solutions Tissues|
|Class 9 NCERT Solutions Diversity in Living Organisms|
|Class 9 NCERT Solutions Motion|
|Class 9 NCERT Solutions Force and Laws of Motion|
|Class 9 NCERT Solutions Gravitation|
|Class 9 NCERT Solutions Work and Energy|
|Class 9 NCERT Solutions Sound|
|Class 9 NCERT Solutions Why Do We Fall Ill|
|Class 9 NCERT Solutions Natural Resources|
|Class 9 NCERT Solutions Improvement in Food Resources|