This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The air contains 78% of A) Oxygen. B) Nitrogen. C) Carbon Dioxide. D) Water Vapour. Show Answer Correct Answer: B) Nitrogen. 2. What is the term for the weight of air molecules pushing down on Earth? A) Gravity. B) Wind. C) Air pressure. D) Oxygen. Show Answer Correct Answer: C) Air pressure. 3. What types of air masses would be colder? A) Maritime. B) Continental. C) Polar. D) Tropical. Show Answer Correct Answer: C) Polar. 4. The process by which green plants prepare their own food in the presence of sunlight and chlorophyll. A) Respiration. B) Photosynthesis. C) Pollution. D) Stomata. Show Answer Correct Answer: B) Photosynthesis. 5. The gas that is present in the highest amount in air A) Nitrogen. B) Oxygen. C) Carbon dioxide. D) Helium. Show Answer Correct Answer: A) 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) Dry heat. C) Heavy snow. D) Heavy rain. Show Answer Correct Answer: A) Fog. 10. Gas protecting us from harmful sun rays. A) Carbon dioxide. B) Ozone. C) Oxygen. D) Helium. Show Answer Correct Answer: B) 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) Stormy. B) Sunny. C) Snowy. D) Hot. Show Answer Correct Answer: B) 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. Warm air is A) Heavy. B) Light. C) Colourful. D) None of the above. Show Answer Correct Answer: B) Light. 16. 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. 17. 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. 18. Continental tropical air masses A) Have cool, dry air. B) Have warm, dry air. C) Have cool, moist air. D) Have warm, moist air. Show Answer Correct Answer: B) Have warm, dry air. 19. Which object would move in the wind? A) A building. B) Leaves. C) An animal. D) A car. Show Answer Correct Answer: B) Leaves. 20. 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. 21. ..... is needed for burning. A) Water. B) Air. C) All the above. D) None of the above. Show Answer Correct Answer: B) Air. 22. 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. 23. 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. 24. What is matter A) Matter is anyhing that can move. B) Matter is anything that has mass and occupies space. C) All the above. D) None of the above. Show Answer Correct Answer: B) Matter is anything that has mass and occupies space. 25. 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. 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