1 Ethan is studying the effects of acid rain. He learns that acid rain can damage aquatic ecosystems. How does acid rain affect aquatic life? A It increases oxygen levels B It lowers the pH of water, harming fish and other organisms C It increases temperature D It adds nutrients
2 Julia is learning about global warming. She understands that global warming is caused by the greenhouse effect. Which gas is the main contributor to the greenhouse effect? A Oxygen B Nitrogen C Carbon dioxide D Argon
3 Hina is learning about international cooperation and politics. She understands that global environmental problems require cooperation. Which international agreement is focused on protecting the ozone layer? A The Paris Agreement B The Montreal Protocol C The Kyoto Protocol D The Geneva Convention
4 Which international agreement aims to protect the ozone layer? A Kyoto Protocol B Montreal Protocol C Paris Agreement D Geneva Convention
5 Diana is learning about climate change. She understands that climate change leads to rising sea levels. What is a consequence of rising sea levels? A Increased agricultural land B Flooding of coastal areas C Desertification D Improved air quality
6 Qasim is learning about strategies to reduce acid rain. He understands that reducing SO2 emissions is key. How can SO2 emissions be reduced? A Using higher sulfur coal B Using flue gas desulfurization (scrubbers) C Burning more coal D Reducing the use of renewable energy
7 Usman is learning about acid rain. He understands that acid rain affects the pH of soil. How does acid rain affect soil pH? A It raises the pH B It lowers the pH C It has no effect D It neutralizes it
8 Ibrahim is studying personal protective measures against pollution. He learns that masks can protect against pollutants. What is the main purpose of wearing an N95 mask during high pollution days? A To filter out large dust particles only B To filter out fine particulate matter C To protect against all gases D To prevent heat stroke
9 Nadia is studying allergens. She learns that allergens can trigger allergic reactions. Which of the following is an example of an outdoor allergen? A Dust mites B Pet dander C Pollen D Mold
10 Bongani is learning about indoor pollution. He understands that indoor air can be more polluted than outdoor air. Which of the following is a source of indoor air pollution? A Outdoor traffic B Cooking with biomass fuels C Industrial emissions D Volcanoes
11 Bilal is learning about air pollutants. His teacher explains that pollutants can be natural or man-made. Which of the following is a primary air pollutant released from the burning of fossil fuels? A Ozone B Sulfur dioxide C Water vapor D Nitrogen gas
12 Which pollutant reduces the oxygen-carrying capacity of blood? A Sulfur dioxide B Carbon dioxide C Carbon monoxide D Nitrogen dioxide
13 Which gas is mainly responsible for acid rain? A Carbon monoxide B Sulfur dioxide C Oxygen D Nitrogen
14 David is learning about carbon dioxide. He knows that CO2 is a greenhouse gas. Which human activity is the largest contributor to increased CO2 levels? A Deforestation B Agriculture C Burning of fossil fuels D Industrial processes
15 Which gas is present in the highest percentage in the atmosphere? A Oxygen B Carbon dioxide C Nitrogen D Argon
16 Fatima is learning about methane. She understands that methane is a potent greenhouse gas. Which of the following is a natural source of methane? A Burning fossil fuels B Landfills C Wetlands D Industrial processes
18 Hina is learning about sources of air pollution. She knows that pollution can come from natural sources. Which of the following is a natural source of air pollution? A Industrial emissions B Vehicle exhaust C Volcanic eruptions D Burning of fossil fuels
19 Yara is studying carbon monoxide detectors. She learns that these detectors are important for safety. Why is a carbon monoxide detector important in homes? A To detect CO2 levels B To detect CO, which is odorless and poisonous C To detect smoke D To detect humidity
20 Which human activity increases carbon dioxide in air? A Photosynthesis B Deforestation C Rainfall D Respiration of plants
21 Which of the following is NOT a major air pollutant? A Carbon monoxide B Sulfur dioxide C Nitrogen D Nitrogen oxides
22 Which of the following is a natural source of air pollution? A Factories B Vehicles C Volcanoes D Power plants
23 Mohamed is learning about indoor pollution. He understands that indoor pollution can be caused by many sources. Which of the following is a common indoor pollutant from building materials? A Asbestos B Ozone C Methane D Sulfur dioxide
25 Paula is studying acid rain. She learns that acid rain can corrode metals. Which metal is particularly susceptible to corrosion by acid rain? A Gold B Iron C Aluminum D Copper
27 Vera is studying air quality. She learns that the AQI includes different pollutants. Which of the following pollutants is included in the AQI? A Carbon dioxide B Ground-level ozone C Water vapor D Argon
29 Global warming leads to: A Decrease in sea level B Increase in sea level C Stable climate D No climate change
30 Tina is learning about strategies to solve acid rain. She understands that acid rain can be mitigated by reducing emissions. Which of the following is a strategy to reduce acid rain? A Increasing the use of coal B Using catalytic converters in vehicles C Burning more fossil fuels D Reducing the use of renewable energy