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(a) Carbon dioxide (b) Oxygen (c) Nitrogen (d) All of … → Low pressure is associated with cloudy skies and wet weather. Q39. Class: 7 Duration of the Period: 45 minutes Subject: Social Science ( Geography) Topic: Atmosphere Lesson Plan Type: Real Teaching Ans: Atmosphere is composed of various gases. Why do places lying the windward side get rainfall while the leeward side remains dry?Ans: The windward side gets more rainfall than the leeward side of a mountain. Answer the following questions: 1. Which gas makes up the largest part of air? Question 9.How do plants and animals help each other in exchange of gases in the atmosphere? Why does this happen? Q1. (b)Nitrogen. Q5. For help very very good answer. A difference in the air pressure defines the direction of wind flow and accordingly, brings changes in the weather conditions. Answer: Blanket of air surrounding the earth is known as the atmosphere. This is the Sample Lesson Plan of Social Science For Class 7 teachers of Geography stream on the structure of atmosphere topic For More Lesson Plans Click Here. 1. Read the data given below and answer questions 8 and 9. Q3. This type of rain usually is due to the occurrence of cyclonic activities. 1. (a) Planets (b) Moon (c) Sun . Nov 29, 2020 - Some Extra Questions: Chapter 4 - Air, Class 7, SST Class 7 Notes | EduRev is made by best teachers of Class 7. We have Provided Air Class 7 Geography MCQs Questions with Answers to help students understand the concept very well. What are the factors affecting temperature of any place? a. Ans. Such fast-moving aircraft and air buses. Very helpful content, Nice answers.I am using these answers . Major gases present are:(i) Nitrogen – 78%(ii) Oxygen – 21%(iii) Argon - .93%(iv) Carbon Dioxide – 0.03%Other Gases – 0.04% (like – helium, hydrogen, methane, ozone, etc. Download the best answers to perform well in your exams. • The boundary separating mesosphere and ionosphere is known as mesopause. Play Live Live. MCQ Type Extra Questions (1) Which type of rainfall is occurred due to the presence of hill or a mountain in the path the winds ? I. • Temperature decreases at the rate of 1 degree Celsius from every 165 mtrs of ascent. This document is highly rated by Class 7 … → Horizontally the distribution of air pressure is influenced by temperature of air at a given place. What do you mean by precipitation? How is it different from anti cyclone?Ans. Some of the examples are: -(a) Chinook: Chinook means 'snow eater'. Q2. Practicing these NCERT Social Science MCQs for Class 7 CBSE with Answers Pdf will guide students to do a quick revision for all the concepts present in each chapter and prepare for final exams. OBJECTIVE TYPE QUESTIONS. Air - Solved Exercises Question1.Answer the following questions. Train, motor, tram, ship, scooter etc. Draw a diagram also. Short Q&A: Q1: What happens when air comes in contact with a cool surface? It always produces a rain shadow effect. 2. Check the answers of worksheet on air, water and weather: Answers: I. Simran Kumari 01 August, 2020 Thanks. Q1. 2. Questions Done: 0. For help in the study • This layer is free from weather changes, cloud formation and dust particles. Pages. • The air pressure is highest at sea level and decreases with height. Students can Download EVS Chapter 6 Air Questions and Answers, Summary, Notes Pdf, KSEEB Solutions for Class 5 EVS helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations. But since cool air can't hold as much moisture as warm air, it begins to precipitate on the windward side (the side of mountain that is facing the prevailing winds). The questions and the detailed answers to the questions will help you to comprehend the concepts and ideas given in CBSE class 6 Science examination. Why do places lying the windward side get rainfall while the leeward side remains dry? • This layer is next to earth surface. • This layer is next to stratosphere and it extends from 50 kms to 80 kms. Edit. Change Class Class 7 CRE Questions and Answers. Question 1. That is, an anticyclone's central air pressure is higher than that of its surroundings, and the airflow is anticlockwise in the Southern Hemisphere and clockwise in the Northern Hemisphere. Multiple Choice Questions: Which of the following cause/s humidity and rain? Olympiads: There are several Olympiads organised by the Science Olympiad Foundation (SOF) such as IMO, NCO, NSO and ISO. (a) Carbondioxide. Q6. What are the different types of winds? Major gases present are: Other Gases – 0.04% (like – helium, hydrogen, methane, ozone, etc. Air Force is a large … (c) Tiny dust particles help in the formation of the rain droplets. What is the main cause of air pollution?Ans: Any change in the composition of air is termed as "Air Pollution". A. Class 7 Social Science MCQs Questions with Answers Chapter Wise PDF Download. Ans: Thermosphere or Ionosphere is the layer of the atmosphere enables wireless communications. Q2. All questions and answers from the NCERT Book of Class 7 Social science Chapter 4 are provided here for you for free. 4. Ans: The windward side gets more rainfall than the leeward side of a mountain. Cyclones can produce cloudy weather and broad areas of rain and even snow. B. Describe the structure of the atmosphere. What is the water vapour present in the air called? Multiple Choice Questions (MCQ) for CBSE Class 7 all subjects on Topperlearning. • The boundary separating stratosphere and mesosphere is known as stratopause. A. • This layer is next to mesosphere and it extends from 80 kms to 400 kms. D. Sulfur dioxide. Read the concept to answers the questions on needs of air. Get all questions and answers of Air And Atmosphere of ICSE Class 7 Chemistry on TopperLearning. • This layer protects us from the harmful radiation. 13 minutes ago by. Q1. Answer: Clear and sunny sky The simple and accurate answers provided here are perfect for effective exam preparations. Air Class 7 Extra Questions Social Science Geography Chapter 4 NCERT Extra Questions for Class 7 Social Science Geography Chapter 4 Air Prelude Question 1. It's a daily feature in the equatorial regions. Stratosphere:• This layer is next to troposphere and it extends from 15 kms to 50 kms.• This layer is free from weather changes, cloud formation and dust particles. 2. Log in. Answer: The thick blanket of air (mixture of gases) around the earth is called atmosphere. a. thanks nirmancare. Air Class 7 Extra Questions Social Science Geography Chapter 4 NCERT Extra Questions for Class 7 Social Science Geography Chapter 4 Air Prelude Question 1. NCERT Solutions for Class 6 Science Air around Us. This is because the prevailing winds come up and the cool air tries to hold that much moisture. Class 7 Short and Long Question Answers - Air Class 7 Notes | EduRev Summary and Exercise are very important for perfect preparation. Temperature increase with increase in height. Answer: The air that we breathe is a mixture of many gases like oxygen, nitrogen, carbon dioxide, argon etc. Which of the following gases is not present in air? Question 1. Blog provides NCERT solutions, CBSE, NTSE, Olympiad study material, model test papers, important Questions and Answers asked in CBSE examinations. 2. Light gases like hydrogen and helium float into space from here. Students can score well by going through these important questions of Chapter 8 as it consists of all important topics related to Pollution of Air … (e) It protects us from falling meteors and other cosmic dusts. done clear. Helped alot!!!! Your email address will not be published. (d) It acts as a blanket which prevents the earth from becoming too hot during day and too cold during night. Air, CBSE Geography Class 7 NCERT Solutions. A difference in the air pressure defines the direction of wind flow and accordingly, brings changes in the weather conditions. What is the composition of the air?Ans: Atmosphere is composed of various gases. Class VII: Chapter 4 (Air) Question & Answer. 7th grade . CBSE Class VII (7th) Geography -Chapter 4. Answer:(c) Ozone. ... Class 7 CRE Revision Questions - (Click appropriate answer then click submit) Guest Account. How is it important to us?Ans: The weight of air on the earth's surface is referred to as "Atmospheric Pressure". 5. Jasmine conducted an experiment. (b) Oxides of sulphur and nitrogen combine with rain water to form sulphuric acid and nitric acid which cause acid rain. Q1. How do all living beings depend on the atmosphere for their survival? Long Answer Type Questions: Describe the composition of the air. Question2.Tick the correct answer: Q(i) Which of the following gases protects us from harmful sun rays? Oxygen. Major gases present are: (i) Nitrogen – 78% (ii) Oxygen – 21% (iii) Argon - .93% (iv) Carbon Dioxide – 0.03% Other Gases – 0.04% (like – helium, hydrogen, methane, ozone, etc. (a) Air (b) Plants (c) Water (d) None of These Answer: Plants. Download the NCERT Solutions for Class 7 Geography Chapter 4 - Air here in PDF format. Seasonal or Periodic Winds: These winds change their direction in different seasons. Print; Share; Edit; Delete; Report an issue; Start a multiplayer game . 1. Share practice link . These winds are broadly classified as: -(a) Trade Winds(b) Westerlies(c) Polar Easterlies. ... Hi Guest, Sign In or Create an Account . On weather maps, a so . CBSE Class 6th, 7th, 8th, 9th, & 10th | Help Guide | Solved Exercises | MCQs | Questions & Answers | Sample Papers. 1. Question 2. A huge blanket of air by which our earth is surrounded is called atmosphere. (b) Drizzle: Light rainfall in the form of very tiny drop of water is called "Drizzle". Ans. Solo Practice . 3. Here you can get Class 8 Important Questions Science based on NCERT Text book for Class VIII. Surrounding air moves toward the low-pressure area and starts to circulate, cyclone moves clockwise in the Southern Hemisphere and anticlockwise in the Northern Hemisphere. • This layer contains electrically charged particles called ions, which are found at a height of 250 kms. This is your solution of NCERT Textbook - Air Class 7 Notes | EduRev search giving you solved answers for the same. • Average height: 13 kms at poles and 18 kms over the equator. What are the different types of winds? (c) Sirocco: These are hot and moist winds, which blow from Sahara desert to Mediterranean Sea. Q(i).What is atmosphere? Question 9. (e) It protects us from falling meteors and other cosmic dusts. (i) What is atmosphere? View Answer. Q1. Assign HW. (b) Climate: The sum total or average of the weather conditions of a large area over a longer period of time is known as climate. They burn when coming in contact with the atmosphere. Change Class. The dry air moves on to the leeward side (the side of a mountain that is not facing prevailing winds) and stays there, usually causing deserts to form. What do you mean by wind? (c)Ozone. Wet clothes take longer time to dry on a humid day because the air has a plenty of water vapor already present in it and is not able to accommodate more water vapor. Students can also use the CBSE Class 7 Geography Chapter 4 Air Important Questions to prepare most competently for the exam. Local Winds: These winds blow only during a particular period of the day or year. These solutions for Air are extremely popular among Class 7 students for Social science Air Solutions come handy for quickly completing your homework and preparing for exams. Finish Editing . a. Troposphere b. Thermosphere c. Mesosphere d. None of these Q.2. The largest Tsunami wave travels at the speed of (a) more than 700 km per hour (b) more than 500 km per hour (c) more than 250 km per hour (d) more than 100 km per hour. The personalised interactive medium of learning helps even non-participative students become responsive. Ans. Online Test of Chapter – 4 Air Test 1 | Geography Class 7th Social Science (S.St) Q. 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