Water pollution quiz for Grade 5 with answer key.

📚 Quick Study Guide

• 💧 What is Water Pollution? It happens when harmful substances contaminate water sources like rivers, lakes, and oceans.
• 🏭 Sources of Pollution: These can include factories releasing chemicals, farms using pesticides, and sewage from cities.
• 🌱 Types of Pollutants: Examples include chemicals, bacteria, trash, and oil.
• 🐟 Effects on Environment: Water pollution can harm fish and other aquatic life, making the water unsafe for drinking and recreation.
• 🛡️ Preventing Water Pollution: We can reduce pollution by using less plastic, properly disposing of waste, and supporting policies that protect water sources.
• 🚰 Clean Water Act: This important law helps to regulate and reduce water pollution in the United States.
• 💡 Eutrophication: The enrichment of a water body with nutrients, causing excessive plant growth and depletion of oxygen.

🧪 Practice Quiz

1. Which of the following is NOT a common source of water pollution?
   1. A. Factory waste
   2. B. Rainwater
   3. C. Agricultural runoff
   4. D. Sewage
2. What is a pollutant?
   1. A. Clean water
   2. B. A harmful substance that contaminates the environment
   3. C. A type of fish
   4. D. A water filter
3. How does water pollution affect aquatic life?
   1. A. It helps them grow stronger
   2. B. It has no effect
   3. C. It can harm or kill them
   4. D. It cleans their habitat
4. Which of the following is a way to prevent water pollution?
   1. A. Throwing trash in rivers
   2. B. Using less plastic
   3. C. Pouring oil down the drain
   4. D. Ignoring leaks from cars
5. What is the main purpose of the Clean Water Act?
   1. A. To encourage water pollution
   2. B. To regulate and reduce water pollution
   3. C. To promote the use of plastic
   4. D. To increase factory waste
6. What is eutrophication?
   1. A. The process of cleaning water
   2. B. The enrichment of water with nutrients, causing excessive plant growth
   3. C. A type of water filter
   4. D. A type of fish
7. Which of these human activities contributes the LEAST to water pollution?
   1. A. Industrial waste disposal
   2. B. Sustainable farming practices
   3. C. Untreated sewage discharge
   4. D. Oil spills from tankers