1 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
3 Nadia is learning about strategies to reduce environmental problems. She understands that climate change can be mitigated by reducing emissions. Which of the following is a strategy to reduce climate change? A Increasing fossil fuel use B Afforestation and reforestation C Deforestation D Burning of waste
5 Waleed is learning about personal protective measures. He knows that staying indoors during high pollution days is recommended. Why is it advisable to stay indoors during high pollution days? A To avoid heat B To reduce exposure to outdoor pollutants C To avoid rain D To save electricity
6 Zayn is learning about risk factors associated with pollution. He understands that long-term exposure to pollutants can cause health problems. Which of the following is a health risk of long-term exposure to air pollution? A Skin infections B Respiratory diseases C Muscle pain D Hair loss
7 Global warming leads to: A Decrease in sea level B Increase in sea level C Stable climate D No climate change
8 Samir is studying international cooperation and politics. He learns that global problems require global solutions. What is an example of international cooperation to address climate change? A The Paris Agreement B The Kyoto Protocol C The Montreal Protocol D All of the above
9 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
10 Qasim is studying sustainable land use. He learns that sustainable land use is important for reducing environmental problems. Which of the following is an example of sustainable land use? A Deforestation B Urbanization C Conservation agriculture D Mining
11 Yara is studying the role of international cooperation in solving environmental problems. She knows that the Paris Agreement is a global effort. What is the main goal of the Paris Agreement? A To eliminate all greenhouse gases B To limit global warming to well below 2°C above pre-industrial levels C To stop all industrial activity D To reduce population
12 Which gas is present in the highest percentage in the atmosphere? A Oxygen B Carbon dioxide C Nitrogen D Argon
13 Which layer of atmosphere is important for radio communication? A Troposphere B Stratosphere C Ionosphere D Mesosphere
14 Julia is studying air quality indices. She understands that the AQI provides information about air quality. What does the AQI measure? A Only ozone levels B Concentrations of major air pollutants C Only particulate matter D Carbon dioxide levels
15 Ahmed is studying the composition of the atmosphere in his chemistry class. He learns that the atmosphere is made up of several gases. Which gas is the most abundant in the Earth's atmosphere? A Oxygen B Carbon dioxide C Nitrogen D Argon
16 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
17 Which international agreement aims to protect the ozone layer? A Kyoto Protocol B Montreal Protocol C Paris Agreement D Geneva Convention
18 Which gas is mainly responsible for acid rain? A Carbon monoxide B Sulfur dioxide C Oxygen D Nitrogen
21 Paula is learning about afforestation and reforestation. She understands that planting trees helps to reduce CO2 levels. How does afforestation help reduce CO2? A By releasing CO2 B By absorbing CO2 during photosynthesis C By converting CO2 to O2 D By reflecting sunlight
22 Carbon monoxide is mainly produced by: A Photosynthesis B Incomplete combustion of fuels C Volcanoes D Respiration
23 Rania is studying photosynthesis. She understands that photosynthesis is a natural carbon sink. Which organisms are primarily responsible for photosynthesis? A Animals B Plants C Fungi D Bacteria
24 Which of the following is a natural source of air pollution? A Factories B Vehicles C Volcanoes D Power plants
25 Which layer of atmosphere is the coldest? A Troposphere B Stratosphere C Mesosphere D Thermosphere