Pollution and Environmental Issues — Advanced

Grade 8 Science — Pollution and Environmental Issues — Advanced: 25 practice questions with instant scoring and explanations.

1. Which gas in the atmosphere is primarily responsible for absorbing ultraviolet (UV) radiation from the sun?
2. The thinning of the ozone layer is mainly caused by the release of which type of chemical compound?
3. Global warming is primarily caused by an increase in the concentration of which gas?
4. Which of the following is NOT a greenhouse gas?
5. What is the main human activity that contributes to an increase in atmospheric CO2 levels?
6. Acid rain is primarily caused by the release of which gases into the atmosphere?
7. The pH of acid rain is typically:
8. Which of the following is an effect of acid rain on monuments and buildings?
9. Eutrophication of water bodies is primarily caused by excessive amounts of:
10. What is the immediate consequence of eutrophication in a water body?
11. Biogas is primarily composed of:
12. Which process is used to produce biogas from organic waste?
13. What is a major advantage of using CNG (Compressed Natural Gas) as a fuel for vehicles?
14. The main component of CNG is:
15. Which of the following is a renewable source of energy that helps reduce pollution?
16. The Montreal Protocol was signed to protect:
17. Which human activity is most responsible for increasing methane levels in the atmosphere?
18. Smog formation in cities is primarily due to:
19. Which gas is responsible for photochemical smog formation?
20. The main source of lead pollution in air was historically:
21. What is the primary greenhouse effect?
22. Which of the following would reduce environmental pollution the most?
23. Thermal pollution of water bodies is caused by:
24. The concentration of CO2 in the atmosphere has increased primarily due to:
25. Which of the following is an eco-friendly alternative fuel?