This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The air contains 78% of A) Water Vapour. B) Oxygen. C) Carbon Dioxide. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 2. What is the term for the weight of air molecules pushing down on Earth? A) Gravity. B) Wind. C) Oxygen. D) Air pressure. Show Answer Correct Answer: D) Air pressure. 3. What types of air masses would be colder? A) Continental. B) Maritime. C) Tropical. D) Polar. Show Answer Correct Answer: D) Polar. 4. The process by which green plants prepare their own food in the presence of sunlight and chlorophyll. A) Stomata. B) Photosynthesis. C) Pollution. D) Respiration. Show Answer Correct Answer: B) Photosynthesis. 5. The gas that is present in the highest amount in air A) Carbon dioxide. B) Nitrogen. C) Oxygen. D) Helium. Show Answer Correct Answer: B) Nitrogen. 6. Which of the following are the primary causes of water pollution? A) Plants. B) Animals. C) Human Activities. D) None of these. Show Answer Correct Answer: C) Human Activities. 7. The taking in of air is called A) Inhalation. B) Exhalation. C) None of these. D) None of the above. Show Answer Correct Answer: A) Inhalation. 8. What causes an object to fall faster? A) Smaller surface area. B) Larger surface area. C) If it has a parachute. D) If it is softer. Show Answer Correct Answer: A) Smaller surface area. 9. Which kind of weather usually forms over the northwest United States in the summer because of maritime polar air masses? A) Fog. B) Heavy rain. C) Dry heat. D) Heavy snow. Show Answer Correct Answer: A) Fog. 10. Gas protecting us from harmful sun rays. A) Oxygen. B) Helium. C) Carbon dioxide. D) Ozone. Show Answer Correct Answer: D) Ozone. 11. ..... constitutes 0.03% by volume of the air. A) Carbon Dioxide. B) Lead. C) Sulphur Dioxide. D) None of the above. Show Answer Correct Answer: A) Carbon Dioxide. 12. On a cold, cloudy day, the local weather forecaster predicts that a high pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area? A) Hot. B) Snowy. C) Sunny. D) Stormy. Show Answer Correct Answer: C) Sunny. 13. What is described by air that is constantly moving because of the differences in water temperature and land temperature? A) Tides. B) Hurricanes. C) Sand dunes. D) Sea and land breezes. Show Answer Correct Answer: D) Sea and land breezes. 14. What helps the kite to fly A) Air. B) Water. C) None of these. D) None of the above. Show Answer Correct Answer: A) Air. 15. During night when air from land moves towards the sea, it is called ..... A) Sea breeze. B) Land breeze. C) Wind. D) Oxygen. Show Answer Correct Answer: B) Land breeze. 16. If I have two locations which ones have the same air pressure? A-1016B-1012C-1008D-1012 A) A and B. B) B and C. C) B and D. D) D and A. Show Answer Correct Answer: C) B and D. 17. Continental tropical air masses A) Have cool, moist air. B) Have warm, dry air. C) Have cool, dry air. D) Have warm, moist air. Show Answer Correct Answer: B) Have warm, dry air. 18. Which object would move in the wind? A) An animal. B) A building. C) Leaves. D) A car. Show Answer Correct Answer: C) Leaves. 19. What are the two types of breeze? A) Land breeze. B) Sea breeze. C) None. D) Both lb and sb. Show Answer Correct Answer: D) Both lb and sb. 20. ..... is needed for burning. A) Water. B) Air. C) All the above. D) None of the above. Show Answer Correct Answer: B) Air. 21. The Particles of Solids are ..... packed together. A) Loosely. B) Tightly. C) Very loosely. D) None of the above. Show Answer Correct Answer: B) Tightly. 22. Nothing happens to the air particles in the bottle when the jar is squeezed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Air pollution is ..... A) Loud noises. B) Too many birds in an area. C) Anything in the air that can hurt the environment or make people sick. D) None of the above. Show Answer Correct Answer: C) Anything in the air that can hurt the environment or make people sick. 24. Which of these locations did a tropical maritime (mT) air mass originate? A) Over Mexico. B) Over Canada. C) Over a Southern region of the Atlantic Ocean. D) Over Antarctica. Show Answer Correct Answer: C) Over a Southern region of the Atlantic Ocean. 25. A controlling surface on an aircraft's tail that regulates yaw. A) Wing. B) Aileron. C) Rudder. D) Flaps. Show Answer Correct Answer: C) Rudder. 26. We can taste and smell air. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 27. What type of weather does low pressure systems bring? A) Light breezes. B) Dry weather. C) Precipitation. D) High temperatures. Show Answer Correct Answer: C) Precipitation. 28. We can feel air when it moves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 29. Which gas released in the atmosphere creates a greenhouse effect trapping the heat? A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) All of these. Show Answer Correct Answer: A) Carbon dioxide. 30. During the puddle experiment the water slowly disappeared, what do we call this? A) Homework. B) Happiness. C) Precipitation. D) Evaporation. Show Answer Correct Answer: D) Evaporation. 31. What a nickname was given to the Tuskegee Airmen and other Black pilots in World War II? A) Red Tail. B) Green Belts. C) Blue Wings. D) X-Wings. Show Answer Correct Answer: A) Red Tail. 32. Radiation inversion is more common in the winter season than in summer, because of A) Longer days. B) Longer nights. C) Shorter nights. D) Shorter days. Show Answer Correct Answer: B) Longer nights. 33. Where would you likely feel the strongest wind?A. Between locations at 1016 to 1012B. Between locations at 1012 to 1008C. Between locations from 1012 to 988 A) A. B) B. C) C. D) None of the above. Show Answer Correct Answer: C) C. 34. The Tuskegee Airmen were the first Black American A) College graduates. B) Navy Soldiers. C) Marines. D) Military pilots. Show Answer Correct Answer: D) Military pilots. 35. Greenhouses gases A) Absorb and radiate heat. B) Destroy the ozone layer. C) Cause respiratory problems. D) Create smog. Show Answer Correct Answer: A) Absorb and radiate heat. 36. What causes air masses to move? A) A difference in air pressure and temperature occurs. B) Weather conditions change rapidly to produce storms. C) A collision takes place between two natural wind patterns. D) Long, narrow bands of wind blow in the upper atmosphere. Show Answer Correct Answer: D) Long, narrow bands of wind blow in the upper atmosphere. 37. The ..... is the main body of an airplane. A) Window. B) Fuselage. C) Empennage. D) Cockpit. Show Answer Correct Answer: B) Fuselage. 38. Which of the following is not a solid pollutant ..... A) Germs. B) Smoke. C) Sulphur. D) Dust. Show Answer Correct Answer: C) Sulphur. 39. The amount of rainfall is measured through A) Barometer. B) Wind vane. C) Rain Gauge. D) Thermometer. Show Answer Correct Answer: C) Rain Gauge. 40. If you import goods to the country of your arrival you must go through customs and you pay ..... A) Duty. B) A tax. C) A charge. D) A fee. Show Answer Correct Answer: A) Duty. 41. In which layer do we live? A) Mesosphere. B) Troposphere. C) Exosphere. D) Thermosphere. Show Answer Correct Answer: B) Troposphere. 42. Air can be ..... A) Heard. B) Seen. C) Tasted. D) Felt. Show Answer Correct Answer: D) Felt. 43. When a burning candle is covered with the glass, it extinguishes. Why? A) Because of absence of oxygen. B) Because of presence of oxygen. C) Because of presence of carbon dioxide. D) Because of absence of oxygen. Show Answer Correct Answer: A) Because of absence of oxygen. 44. Heat from the sun helps wet clothes to ..... A) Dry. B) Wet. C) Fly. D) Dirty. Show Answer Correct Answer: A) Dry. 45. Without passport and visa we can't travel in foreign countries. A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 46. A boundary where two air masses that meet. A) Cold front. B) Front. C) Continental polar. D) Air mass. Show Answer Correct Answer: B) Front. 47. Which of the following is not a meteorological factor? A) Atmospheric Stability. B) Temperature. C) Pressure. D) Visibility. Show Answer Correct Answer: C) Pressure. 48. We can feel air when it ..... A) Moves. B) Blows. C) Flies. D) None of the above. Show Answer Correct Answer: B) Blows. 49. Which of the following is NOT a cause of air pollution? A) Smoke from factories. B) Exhaust from cars and trucks. C) Forest fires. D) Difficulty breathing. Show Answer Correct Answer: D) Difficulty breathing. 50. To show the presence of oxygen and nitrogen in air, take a test tube ..... long and fix along its side a ..... long strip graph paper A) 5cm, 8cm. B) 7cm, 3cm. C) 8cm, 5cm. D) None of these. Show Answer Correct Answer: C) 8cm, 5cm. 51. How many episode does avatar the last air bender have? A) 101. B) 71. C) 81. D) 61. Show Answer Correct Answer: D) 61. 52. Which of the following is true about the Clean Air Act Amendments of 1990? A) They allowed power plants to buy and sell SO2 pollution allowances. B) They decreased the CAFE (corporate average fuel economy) standards for light trucks from 29 mpg to 12 mpg. C) They increased the allowable level of tropospheric ozone from 80 ppb to 100 ppb. D) They regulated the emission of CO$_{2}$ by power plants. Show Answer Correct Answer: A) They allowed power plants to buy and sell SO2 pollution allowances. 53. How do we characterize an air mass that forms over land? A) Warm. B) Dry. C) Wet. D) Cold. Show Answer Correct Answer: B) Dry. 54. What do you call a very strong wind? A) Wind. B) Storm. C) Breeze. D) None of the above. Show Answer Correct Answer: C) Breeze. 55. Which of component present in air indicates air pollution? A) 0.03% carbon dioxide. B) Oxygen. C) Nitrogen. D) Sulphur dioxide, carbon monoxide and larger percentage of carbon dioxide. Show Answer Correct Answer: D) Sulphur dioxide, carbon monoxide and larger percentage of carbon dioxide. 56. The method of changing a liquid into its vapours form and then condensing the vapours to get the pure from of that liquid is called. A) Sedimentation. B) Condensation. C) Distillation. D) Evaporation. Show Answer Correct Answer: C) Distillation. 57. The amount of insolation ..... A) Increases from equator to poles. B) Decreases from the equator towards the poles. C) Decreases from poles to equator. D) None of the above. Show Answer Correct Answer: B) Decreases from the equator towards the poles. 58. Which air mass is normally associated with the formation of hurricanes? A) Maritime polar. B) Continental polar. C) Continental tropical. D) Maritime tropical. Show Answer Correct Answer: D) Maritime tropical. 59. Water has no smell, no color, no ..... A) Weight. B) Taste. C) Liquid. D) None of the above. Show Answer Correct Answer: B) Taste. 60. Air works best when it has air ..... behind it. A) Pumps. B) Pressure. C) Force. D) Directions. Show Answer Correct Answer: B) Pressure. 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