This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 18 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... pressure systems are characterized by fair weather. A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: A) High. 2. What is the effect of heating the air inside the balloon? A) Nothing the balloon stays on the ground. B) The balloon falls over. C) The balloon rises. D) The balloon barely lifts off the ground. Show Answer Correct Answer: C) The balloon rises. 3. During World II, the US military was A) Segregated. B) Integrated. C) Only open to white Americans. D) Nonexistent. Show Answer Correct Answer: A) Segregated. 4. The air conditioning compressor ..... vaporized refrigerant and allows it to flow to the condenser. A) Pressurizes. B) Cleans. C) Cools. D) Supplies. Show Answer Correct Answer: A) Pressurizes. 5. If the speed of the cyclone is more than 120 miles per hour then the cyclone is known as A) Tropical Cyclone. B) Super Cyclone. C) Severe Cyclone. D) None of these. Show Answer Correct Answer: B) Super Cyclone. 6. What is the percentage composition of nitrogen in air? A) 78%. B) 75%. C) 86%. D) None of the above. Show Answer Correct Answer: A) 78%. 7. ..... has the same temperature and moisture content throughout. A) Convection current. B) Front. C) Air mass. D) None of the above. Show Answer Correct Answer: C) Air mass. 8. Weather phenomenon happens in which layerOf atmosphere A) Troposphere. B) Thermosphere. C) Exosphere. D) None. Show Answer Correct Answer: A) Troposphere. 9. Animals get ..... from plants. A) Nitrogen. B) Oxygen. C) Carbon dioxide. D) None of these. Show Answer Correct Answer: B) Oxygen. 10. Secondary air pollutants: A) Are directly emitted from tailpipes and smokestacks. B) Are emitted indoors from the off-gassing of furniture, carpet, and other man-made fabrics. C) Are non-point sources of pollution that cannot be regulated by the Clean Air Act. D) Are produced by interactions between primary air pollutants or between primary air pollutants and other atmospheric gases. Show Answer Correct Answer: D) Are produced by interactions between primary air pollutants or between primary air pollutants and other atmospheric gases. 11. Compared to a maritime tropical air mass, a maritime polar air mass has a A) Higher temperature and less water vapor. B) Lower temperature and more water vapor. C) Higher temperature and more water vapor. D) Lower temperature and less water vapor. Show Answer Correct Answer: D) Lower temperature and less water vapor. 12. The air particles in the jar push on the water in the straw. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 13. When there is a heavy smog, then it prevents the sunrays from reaching us, which may result in deficiency of ..... A) Vitamin A. B) Vitamin C. C) Vitamin D. D) None of the above. Show Answer Correct Answer: C) Vitamin D. 14. Air pollution is not harmful to humans, animals, and plants. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. The dark coloured gas coming out of factories is called ..... A) Smudge. B) Air. C) Dust. D) Smoke. Show Answer Correct Answer: D) Smoke. 16. What can humans do to reduce the effects of acid rain? A) Use Less Energy. B) Develop Alternate Energy Sources (Solar Power, Wind Energy). C) Stop Burning Fossil Fuels. D) All of the Answers are Correct. Show Answer Correct Answer: D) All of the Answers are Correct. 17. Exosphere extend to? A) 1, 000 km to 2, 000 km. B) 1 km to 10 km. C) 80 km to 100 km. D) 700 km to 10, 000 km. Show Answer Correct Answer: D) 700 km to 10, 000 km. 18. Maritime air masses will contain more moisture than continental air masses? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. A scientist that studies the weather is called a ..... A) Meteorologist. B) Vet. C) Truck driver. D) Teacher. Show Answer Correct Answer: A) Meteorologist. 20. Which type of air mass usually contains the most moisture? A) MP. B) CT. C) MT. D) CP. Show Answer Correct Answer: C) MT. 21. Density of air is greater at high altitudes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 22. How does air get polluted? A) Volcano eruptions. B) Dust storms. C) Wild fires. D) All of the above. Show Answer Correct Answer: D) All of the above. 23. It is anything that makes the earth unhealthy ..... A) Love. B) Water. C) Pollution. D) None of the above. Show Answer Correct Answer: C) Pollution. 24. What is the second largest gas in the atmosphere? A) Carbon Dioxide. B) Nitrogen. C) Oxygen. D) Argon. Show Answer Correct Answer: C) Oxygen. 25. We should grow more ..... A) Fish. B) Plants. C) Vehicles. D) Garbage. Show Answer Correct Answer: B) Plants. 26. The condition of the atmosphere over short periods of time. It changes a lot. A) Weather. B) Climate. C) All the above. D) None of the above. Show Answer Correct Answer: A) Weather. 27. Highest percentage of air consists of A) Nitrogen. B) Argon. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: A) Nitrogen. 28. All of these are air masses that affect the US EXCEPT A) MT. B) CT. C) MA. D) CP. Show Answer Correct Answer: C) MA. 29. What are the major sources of air pollution? A) Industrial emissions. B) Vehicle exhaust. C) Deforestation. D) All of the above. Show Answer Correct Answer: D) All of the above. 30. 78% of earth's atmosphere is composed of ..... A) Oxygen. B) Argon. C) Methane. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 31. True or False, air exerts pressure on everything. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 32. How do we characterize an air mass that forms near the poles? A) Dry. B) Wet. C) Warm. D) Cold. Show Answer Correct Answer: D) Cold. 33. The solid state of water is ..... A) Vapour. B) Water drops. C) Ice. D) None of the above. Show Answer Correct Answer: C) Ice. 34. ..... is present in small quantities in air. A) Nitrogen. B) Carbon dioxide. C) All the above. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 35. Basketball players choose their shoes carefully because they want to ..... friction on the basketball court. A) Increase. B) Decrease. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increase. 36. A ..... studies and forecasts the weather using data gathered from many sources. A) Station model. B) Geologist. C) Meteorologist. D) Biologist. Show Answer Correct Answer: C) Meteorologist. 37. How much percentage does other gases consist in atmosphere A) 1%. B) 0.8%. C) 0.03%. D) 0.005%. E) None. Show Answer Correct Answer: A) 1%. 38. In paragraph 3, the author compares Air Force One with a standard Boeing 747 in order to- A) Emphasize that Air Force One is a unique plane. B) Explain the need for a larger presidential plane. C) List all the features of Air Force One. D) Describe the roles of specialized crew members. Show Answer Correct Answer: A) Emphasize that Air Force One is a unique plane. 39. BareCareDareFareAll have what /air/ spelling A) . B) . C) . D) . Show Answer Correct Answer: D) . 40. Gentle air is called ..... A) Wind. B) Air. C) Storm. D) Breeze. Show Answer Correct Answer: D) Breeze. 41. If density of air is low, pressure is: A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: B) Low. 42. People assume air has no weight because- A) It's difficult to walk through it. B) It's easy to prove. C) We can see it all around us. D) It's invisible. Show Answer Correct Answer: D) It's invisible. 43. The gas, which is present the most in air, is ..... A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) Water vapour. Show Answer Correct Answer: C) Nitrogen. 44. What helps the air to keep it clean? A) Birds. B) Trees. C) Vehicles. D) None of the above. Show Answer Correct Answer: B) Trees. 45. Meteorites burn up in A) Stratosphere. B) Thermosphere. C) Troposphere. D) Mesosphere. Show Answer Correct Answer: D) Mesosphere. 46. Which most likely produces clear, cool weather? A) A low pressure system. B) A high pressure system. C) All the above. D) None of the above. Show Answer Correct Answer: B) A high pressure system. 47. What is the Greenhouse Affect? A) As carbon dioxide concentrations increase, temperatures increase. B) Condition that is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere. C) Causes sea levels to rise because it adds water to the ocean. D) The cooling of Earth due to air pollution. Show Answer Correct Answer: B) Condition that is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere. 48. Two parts in your body that you use for breathing A) Hands. B) Lungs. C) Heart. D) None of the above. Show Answer Correct Answer: B) Lungs. 49. Low pressure areas usually indicates what type of weather? A) Fair. B) Cloudy. C) All the above. D) None of the above. Show Answer Correct Answer: A) Fair. 50. ..... is produced when fuels containing sulfur are burned in the presence of oxygen. A) Carbon dioxide. B) Sulfur oxides. C) Greenhouse gas. D) Carbon monoxide. Show Answer Correct Answer: B) Sulfur oxides. 51. Inhaled air has ..... carbon dioxide than exhaled air. A) More. B) Less. C) All the above. D) None of the above. Show Answer Correct Answer: B) Less. 52. As soon as I ..... the plane, I sat down in the first empty seat. A) Took off. B) Got in. C) Picked up. D) Dropped off. Show Answer Correct Answer: B) Got in. 53. Which of the following is present in air? A) Table. B) Dust. C) Fan. D) Chair. Show Answer Correct Answer: B) Dust. 54. Liquids do not have fixed Shape. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 55. We ..... air inside a balloon. A) Burst. B) Fill. C) Add. D) None of the above. Show Answer Correct Answer: B) Fill. 56. When a cold front is approaching, what happens? A) Warm air is pushing under cold air causing humid weather and lower temperatures. B) Warm air is pushing under cold air causing humid weather and higher temperatures. C) Warm air rises, cools, and causes rain and thunderstorms. D) Cold air is pushed over warm air causing rain and thunderstorms. Show Answer Correct Answer: C) Warm air rises, cools, and causes rain and thunderstorms. 57. Source of carbon monoxide A) Incomplete combustion of fossil fuels. B) Combustion of fossil fuels. C) Decomposition of plant and animal matters. D) Photochemical reaction of CO$_{2}$. Show Answer Correct Answer: A) Incomplete combustion of fossil fuels. 58. What is the path of carbon dioxide as it leaves the lungs? A) Alveolus $\rightarrow$ bronchus $\rightarrow$ bronchiole $\rightarrow$ trachea. B) Alveolus $\rightarrow$ bronchiole $\rightarrow$ bronchus $\rightarrow$ trachea. C) Trachea $\rightarrow$ bronchiole $\rightarrow$ bronchus $\rightarrow$ alveolus. D) Trachea $\rightarrow$ bronchus $\rightarrow$ bronchiole $\rightarrow$ alveolus. Show Answer Correct Answer: B) Alveolus $\rightarrow$ bronchiole $\rightarrow$ bronchus $\rightarrow$ trachea. 59. Which of these is NOT a primary air pollutant? A) Particulate matter (PM2.5). B) Sulfur dioxides (S02). C) Carbon monoxide (C0). D) Smog. Show Answer Correct Answer: D) Smog. 60. What do you mean by the word 'barometer?' A) Instrument that is used to measure length. B) Instrument that is used to measure mass. C) Instrument that is used to measure time. D) Instrument that is used to measure air pressure. Show Answer Correct Answer: D) Instrument that is used to measure air pressure. ← PreviousNext →Related QuizzesGeography QuizzesClass 7 QuizzesClass 7 Geography Chapter 4 Air Quiz 1Class 7 Geography Chapter 4 Air Quiz 2Class 7 Geography Chapter 4 Air Quiz 3Class 7 Geography Chapter 4 Air Quiz 4Class 7 Geography Chapter 4 Air Quiz 5Class 7 Geography Chapter 4 Air Quiz 6Class 7 Geography Chapter 4 Air Quiz 7Class 7 Geography Chapter 4 Air Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books