Question 6. Which one of the following gases constitutes the major portion of the atmosphere? State any three characteristics of the mesosphere. Answer: The earth is the only planet in the universe that has life. This layer of the atmosphere has the lowest temperature. Question 1. E. Answer the following questions in brief. Geography section provides you all type of mcq questions on Atmosphere with explanations. The stratosphere extends from the top of the troposphere up to 80 km above the surface of the earth. Answer the following questions. The air that we breathe is a mixture of many gases like oxygen, nitrogen, carbon dioxide, argon etc. All the best! Make a list of the similar things that we do without realizing that we are destroying the environment. Question 2. Longman Geography Solutions for Class 7 Social science Chapter 5 Composition And Structure Of The Atmosphere are provided here with simple step-by-step explanations. Atmospheric … The air encompasses the earth from all sides. Short Answer Questions. False. Correct : The temperature drops at the rate of 1°C per 165 metres in the atmosphere. How is carbon dioxide a useful gas for life on earth? The earth’s atmosphere is mainly composed of which three gases? The earth’s atmosphere is mainly composed of which three gases? The atmosphere is made up of 78% nitrogen, 21% oxygen, and smaller amounts of argon, carbon dioxide, helium, and neon. Chapter 1: Composition and Structure of the Atmosphere Composition Evolution Vertical Structure. Density is highest near the earth’s surface and goes on decreasing upwards. Multiple choice question(i) Which one of the following gases constitutes the major portion of the atmosphere? Why is the thermosphere important ? Answer: Composition of the Atmosphere: The air we inhale while breathing is actually a mixture of numerous gases. Describe the Earth’s atmosphere in your own words. 78% per cent of the atmosphere is made of nitrogen. Apart from nitrogen and oxygen, what other gases are found in the air in small volume? It protects us from the harmful radiations of the Earth. Upon completion of this lesson, students will be able to: 1. define 'atmosphere' 2. list the layers of Earth's atmosphere 3. describe key features of each layer of the atmosphere 4. summarize the gaseous makeup of Earth's atmosphere In which layer of the atmosphere does this airplane normally fly? Answer: The blanket of air surrounding the earth is called the atmosphere. Question 2. Most of the solid particlas are kept in suspension in the atmosphere. Select Board Class Answer: The list of the similar things that we do without realizing that we are destroying our environment and the ways that we can behave differently and save are : 1. Question 1. These particulates help in the scattering of solar radiation which adds varying charming colour of red and orange at dawn and dusk. However, 99 % of the total mass of the atmosphere is confined to the height of 32 km from the earth’s surface. Think! Selina Concise Geography Voyage Class 7 Chapter 3 Composition and Structure of the Atmosphere Solutions. As you know, the burning of these fuels release gases that pollute the atmosphere. Increase in the volume of carbon dioxide for the past few decades is mainly due to Answer: Significance of the Atmosphere : G Picture study : This is a picture of a supersonic aircraft. APlusTopper.com provides step by step solutions for ICSE Solutions for Class 7 Geography Voyage. Along with carbon dioxide and methane, water vapour is a potent greenhouse gas. This contains 10 Multiple Choice Questions for UPSC Test: Composition And Structure Of Atmosphere (mcq) to study with solutions a complete question bank. 5. These SAQ's are extremely critical for all ICSEstudents to score better marks. (b) It extends from the top of troposphere up to 50 km above the surface of earth. This gas protects us from the harmful ultraviolet radiation. 21 per cent of the atmosphere is composed of. Nitrogen and oxygen are two gases which make up the most of the atmosphere. What is ozone? Atmosphere is a gaseous envelop surrounded earth from all side This atmosphere is present by the gravitational attraction on the earth The life prevails on the earth only because of the present atmosphere If there is no atmosphere the earth became barren The troposphere is the layer of the atmosphere that is closest to the earth. Question We often leave the lights switched on and fans running when we are not in the room. The air encompasses the earth from all sides. Apart from nitrogen and oxygen, what other gases are found in the air in small volume? Answer: A supersonic aircraft fly in stratosphere. NCERT Solutions for Class 7 Social Studies (Geography) Chapter 4 – Air. You can download the Voyage Geography ICSE Solutions for Class 7 with Free PDF download option. Answer. Multiple Choice Questions (MCQ) for Composition and Structure of the Atmosphere - ICSE Class 9 Geography on Topperlearning. The troposphere is the layer of the atmosphere that is closest to the earth. 1. This layer has lowest temperature in the atmosphere reaches -100°C at its end. Answer: The blanket of air surrounding the earth is called the atmosphere.The atmosphere primarily comprises nitrogen and oxygen in bulk and other gases like carbon dioxide, helium, ozone, etc in lesser quantities. What is the troposphere? Answer: The lowest layer of atmosphere is called troposphere where as the boundary between the troposphere and the stratosphere is called tropopause. 4. Answer: Troposphere is the lowest layer of the atmosphere. It supports the formation of clouds and rain. 3. Ozone is another important component of the atmosphere which absorbs the ultra-violet rays radiating from the sun and prevents them from reaching the surface of the earth. State any three characteristics of the stratosphere. This will clear students doubts about any question and improve application skills while preparing for board exams. 2. Composition and Structure of Atmosphere There is no content available! (ii) Draw a suitable diagram for the structure of the atmosphere and label it and describe it. Essential Question: How do I describe the structure and composition of our atmosphere? ICSE Solutions Class 7 Geography History & CivicsMathsPhysicsChemistryBiology. Question 1. The air surrounding the earth is called the atmosphere. Plants need nitrogen to make protein. Nitrogen:It is the gas that is most abundant in the air. Answer: (b) Nitrogen Question 1(ii). ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions. 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