Healthy Surroundings - Grade 3 English - Practice Questions PDF

1. Define (with Answers) ------------------------ 1. Pollution: What is pollution?\ Answer: Harmful substances released into the air, water, or soil that affect the environment negatively. 2. Air Pollution: Define air pollution.\ Answer: Harmful substances released into the air by sm...

1. Define (with Answers) ------------------------ 1. Pollution: What is pollution?\ Answer: Harmful substances released into the air, water, or soil that affect the environment negatively. 2. Air Pollution: Define air pollution.\ Answer: Harmful substances released into the air by smoke, gases, and dust, making it harmful to health ,such as difficulty in breathing,etc. 3. Water Pollution: What is water pollution?\ Answer: Harmful substances released into the water bodies like rivers ,lakes and ocean, making it unfit for drinking and is harmful for health. 4. Noise Pollution: Define noise pollution.\ Answer: Noise pollution refers to loud, unpleasant sounds that harm humans and animals. 5. Exhaust Fumes: What are exhaust fumes?\ Answer: Exhaust fumes are waste gases released by vehicles. 6. Van Mahotsav: Define Van Mahotsav.\ Answer: Van Mahotsav is a tree-planting festival held in July in India to promote tree planting or afforestation. 7. Soil: What is soil?\ Answer: Soil is the top layer of the earth where plants and trees grow. 8. Carbon Dioxide: What is carbon dioxide?\ Answer: Carbon dioxide is a gas released during burning and is absorbed by trees for photosynthesis. 9. Environment: Define environment.\ Answer: The environment is the natural world where humans, animals, and plants live. 10. Shelter: What does shelter mean?\ Answer: Shelter is a place of protection for animals, insects, and humans. 2. True or False (with Answers) ------------------------------- 1. Exhaust fumes help clean the air. (False - They pollute the air.) 2. Van Mahotsav is celebrated in July. (True) 3. Noise pollution affects animals too. (True) 4. Polluted water is safe for drinking. (False - It is unfit and harmful.) 5. Trees help reduce air pollution. (True) 6. Medicines sprayed on plants never pollute rivers. (False - They pollute water bodies.) 7. Carbon dioxide is good for the air. (False - Excess amounts harm the environment.) 8. Trees take in carbon dioxide. (True) 9. Noise from firecrackers is pleasant. (False - It causes noise pollution.) 10. Planting trees prevents soil erosion. (True) 11. Loud noise is harmless near hospitals. (False - It disturbs patients.) 12. Water pollution affects fish and water animals. (True) 13. Burning waste reduces pollution. (False - It increases pollution.) 14. Walking or cycling can reduce air pollution. (True) 15. Waste materials pollute rivers and lakes. (True) 16. Air pollution affects breathing. (True) 17. Noise pollution only happens during festivals. (False - It can happen anytime.) 18. Trees grow in soil. (True) 19. Van Mahotsav is celebrated during winter. (False - It is celebrated during monsoon.) 20. Noise pollution damages hearing. (True) 3. Match the Following - A -------------------------- **Column A** **Column B** ----------------- -------------------------------- Pollution Gas absorbed by trees Carbon Dioxide Dirtying air, water, or soil Noise Pollution Waste materials in rivers Van Mahotsav Firecrackers and traffic horns Water Pollution Tree-planting festival in July Answer ------ **Column A** **Column B** ----------------- -------------------------------- Pollution Dirtying air, water, or soil Carbon Dioxide Gas absorbed by trees Noise Pollution Firecrackers and traffic horns Van Mahotsav Tree-planting festival in July Water Pollution Waste materials in rivers 3. Match the Following - B --------------------------- **Column A** **Column B** --------------- ------------------------------------ Air Pollution Protection for animals and humans Trees Exhaust fumes and smoke Shelter Top layer of earth for plants Vehicles Provide oxygen and prevent erosion Soil Cause exhaust fumes Answer ------ **Column A** **Column B** --------------- ------------------------------------ Air Pollution Exhaust fumes and smoke Trees Provide oxygen and prevent erosion Shelter Protection for animals and humans Vehicles Cause exhaust fumes Soil Top layer of earth for plants 4. Short Answer (with Answers) ------------------------------ 1. What is air pollution?\ Answer: Harmful substances released into the air by smoke, gases, and dust, making it harmful to health ,such as difficulty in breathing,etc. 2. How do trees help the environment?\ Answer: Trees clean the air and provide Oxygen, prevent soil erosion, and provide shelter. 3. What causes noise pollution?\ Answer: Traffic horns, loudspeakers, and firecrackers. 4. Name one festival that promotes tree planting or afforestation.\ Answer: Van Mahotsav. 5. What happens when water gets polluted?\ Answer: When water gets polluted it becomes unfit for drinking and is harmful for health. 6. Why should we reduce vehicle use?\ Answer: Because it causes air pollution by exhaust fumes. 7. What does 'exhaust fumes' mean?\ Answer: Waste gases released by vehicles. 8. What are the effects of noise pollution?\ Answer: It can damage hearing and disturb people. 9. What is soil erosion?\ Answer: Washing away the top soil by rain. 10. What is Van Mahotsav?\ Answer: A tree-planting or afforestation festival held in July. 5. Long Answer (with Answers) ----------------------------- 1. Explain the causes and effects of water pollution.\ Answer: Water pollution happens due to waste materials, chemicals, and medicines entering rivers and lakes. It makes water unfit for drinking and affects plants, animals, and humans. 2. How can we reduce air pollution?\ Answer: By walking or cycling, using public transport, and planting trees. 3. What steps can people take to keep their surroundings clean?\ Answer: Dispose of garbage in bins, plant trees, and avoid burning waste. 4. Why is planting trees important for the environment?\ Answer: Trees clean the air, hold the soil, provide shelter, and give oxygen for breathing. 5. What are the types of pollution? Explain briefly.\ Answer: - Air Pollution: Caused by smoke and exhaust fumes. - Water Pollution: Caused by waste materials in rivers. - Noise Pollution: Caused by loud noises like horns. 6. Opposite of Words (with Answers) ----------------------------------- 1. What is the opposite of 'dirty'?\ Answer: Clean 2. What is the opposite of 'loud'?\ Answer: Quiet 3. What is the opposite of 'polluted'?\ Answer: Pure 4. What is the opposite of 'harmful'?\ Answer: Safe 5. What is the opposite of 'stop'?\ Answer: Start 6. What is the opposite of 'destroy'?\ Answer: Build 7. What is the opposite of 'hot'?\ Answer: Cold 8. What is the opposite of 'short'?\ Answer: Long 9. What is the opposite of 'strong'?\ Answer: Weak 10. What is the opposite of 'thin'?\ Answer: Thick 7. Give Examples ---------------- 1. Give two examples of causes of air pollution.\ Answer: Exhaust fumes, smoke from factories 2. Name two examples of noise pollution.\ Answer: Traffic horns, loudspeakers 3. What are two sources of water pollution?\ Answer: Waste materials, chemicals 4. Give an example of how trees help the environment.\ Answer: Trees clean the air and provide oxygen. 5. What are two activities to reduce pollution?\ Answer: Walking or cycling, planting trees 6. Give two examples of gases that cause pollution.\ Answer: Carbon dioxide, smoke 7. Name two sources of soil pollution.\ Answer: Chemicals, waste materials 8. What are two ways noise pollution can be reduced?\ Answer: Avoid loudspeakers, reduce horn usage 9. Give two examples of how water pollution harms animals.\ Answer: Fish take in chemicals, water animals die. 10. Name two types of pollution that affect health.\ Answer: Air pollution, noise pollution 8. Fill in the Blanks --------------------- 1. Trees clean the air and provide us with \_\_\_\_\_\_\_\_\_\_\_.\ Answer: Oxygen 2. Noise pollution is caused by loud \_\_\_\_\_\_\_\_\_\_\_.\ Answer: Horns 3. Air pollution is caused by \_\_\_\_\_\_\_\_\_\_ fumes from vehicles.\ Answer: Exhaust 4. The Van \_\_\_\_\_\_\_\_\_\_ is a tree-planting festival celebrated in July.\ Answer: Mahotsav 5. Water pollution happens due to waste \_\_\_\_\_\_\_\_\_\_ flowing into rivers.\ Answer: Materials 6. Trees prevent soil \_\_\_\_\_\_\_\_\_\_ caused by rain.\ Answer: Erosion 7. Pollution of water makes it \_\_\_\_\_\_\_\_\_\_ for drinking.\ Answer: Unfit 8. Carbon \_\_\_\_\_\_\_\_\_\_ is released into the air when burning occurs.\ Answer: Dioxide 9. Planting \_\_\_\_\_\_\_\_\_\_ helps reduce pollution and protect the environment.\ Answer: Trees 10. Loud \_\_\_\_\_\_\_\_\_\_ cause hearing damage and disturb patients in hospitals.\ Answer: Noises 9. Inference Questions ---------------------- 1. What happens if trees are cut down?\ Answer: Air pollution increases, and soil erosion occurs. 2. Why is noise pollution harmful?\ Answer: It disturbs people and damages hearing. 3. How do factories affect water?\ Answer: They release harmful waste into rivers. 4. Why do people plant trees during Van Mahotsav?\ Answer: To improve the environment and reduce pollution. 5. What happens if water is not clean?\ Answer: It becomes unfit for drinking and can cause diseases. 9. Word Search 10. Crosswords -----------------------------  --------------------- 11. Dictation Words ------------------- 1. Pollution 2. Environment 3. CarbonDioxide 4. Water 5. Noise 6. Shelter 7. Fumes 8. Exhaust 9. Mahotsav 10. Planting 11. Trees 12. Oxygen 13. Erosion 14. Reduce 15. Walking 16. Rivers 17. Waste 18. Cycle 19. Harmful 20. Clean 21. Materials 22. Soil 23. Vehicle