International Green Warrior Olympiad Class 10 Sample Paper

Q.1

A community relies on a rainwater harvesting system for its water supply. The system collects rainwater from rooftops and stores it in large underground tanks. After a heavy rainfall, the residents notice that the stored water has a brownish colour and an unpleasant odour.
What could be the most likely cause of this contamination?
1. Insufficient filtration and disinfection of the rainwater
2. Accumulation of organic debris in the storage tanks
3. Leaching of pollutants from roofing materials

Q.2

Consider the following statements and choose the correct option:
Statement 1: Climate change impacts are predictable, and their effects remain constant across different regions and communities.
Statement 2: Climate change mitigation involves adapting to its effects rather than reducing greenhouse gas emissions.

Q.3

Consider the case study given below and answer the following question:
Case Study: The Müller Family's Journey to Renewable Energy
The Müller family, residing in a charming village in the German countryside, had always been conscious about their environmental impact. In 2022, they decided to take an active step towards a greener lifestyle by installing a rooftop solar panel system. Their primary motivation was to reduce their reliance on fossil fuels and contribute to mitigating climate change. However, as they embarked on this journey, they discovered a plethora of other benefits:
Environmental Benefits:
-Reduced Carbon Footprint: The solar panels generated clean energy, leading to a significant reduction in their carbon emissions. This translated to a cleaner environment for their family, their community, and the planet.
-Improved Air Quality: By relying less on fossil fuels, the Müllers contributed to cleaner air in their region, which improved their overall health and well-being.
Financial Benefits:
-Reduced Electricity Bills: The solar panels generate enough electricity to cover a significant portion of their household energy needs, resulting in substantial savings on their monthly electricity bills. This provided them with financial stability and freed up resources for other expenses.
-Government Incentives: The German government offers various financial incentives for individuals and families adopting renewable energy solutions. The Müllers took advantage of these incentives, further reducing the cost of their solar panel system and accelerating their return on investment.
Lifestyle Benefits:
-Energy Independence: The Müllers achieved a sense of energy independence by generating their own clean energy. This gave them greater control over their energy consumption and reduced their dependence on the national grid, especially during peak hours.
-Enhanced Home Value: Homes with renewable energy systems are becoming increasingly sought-after, leading to a potential increase in the value of the Müller's property.
Overall Impact:
The Müller family's experience showcases the numerous benefits of adopting renewable energy in a domestic setting. Their commitment to environmental sustainability not only helped them create a cleaner future but also resulted in financial savings and enhanced their quality of life. Their story serves as an inspiration for others to consider switching to renewable energy and contribute to a more sustainable future.
Which of the following statements best describes the primary motivation of the Müller family to switch to renewable energy?
1. Environmental sustainability
2. Financial savings
3. Increased energy independence
4. Minimising the environmental impact

Q.4

In a discussion regarding the significance of tropical rainforests in global climate regulation, a group of environmental researchers is examining the mechanisms by which these forests contribute to this role.
Which mechanism or mechanisms among the following options significantly contribute to the crucial role of tropical rainforests in regulating the global climate?
1. Carbon sequestration through photosynthesis
2. Release of moisture into the atmosphere
3. Absorption of solar radiation

Q.5

You're a municipal waste manager responsible for handling electronic waste (e-waste) in your city. During a routine inspection of the e-waste disposal facility, you notice a significant amount of discarded electronic devices, including computers, monitors, and smartphones. Concerned about potential health hazards, you decide to educate the public about the risks associated with improper disposal of these devices.
Which of the following group of heavy metals is commonly found in electronics and can pose serious health risks if not properly disposed of?

Q.6

Consider the case study given below and answer the following question:
Case study: Combatting Global Food Waste
In a study conducted by the World Resources Institute, it was estimated that one-third of all food produced globally is wasted. This staggering amount represents a significant loss of resources, including water, land, and energy, and contributes to greenhouse gas emissions. To address this pressing issue, researchers have developed various strategies to reduce food waste, each tailored to specific stages of the food supply chain.
At the household level, meal planning and proper storage practices can significantly reduce food waste. Planning meals ahead of time helps individuals avoid impulse purchases and ensures that ingredients are used before they spoil. Proper storage, such as keeping fruits and vegetables in the refrigerator and storing pantry items in airtight containers, extends the shelf life of food.
In the retail sector, implementing innovative technologies like dynamic pricing and smart packaging can help reduce food waste. Dynamic pricing adjusts the price of perishable items based on their freshness, encouraging consumers to purchase items before they spoil. Smart packaging incorporates sensors that monitor the freshness of food, alerting retailers when items are nearing their expiration dates.
Food waste reduction strategies also extend to the production and processing stages of the food supply chain. Improved harvesting techniques and post-harvest handling practices can minimise damage to crops and reduce food losses. Additionally, diverting inedible food scraps from landfills to composting facilities can convert waste into valuable nutrient-rich soil amendments.
By implementing these strategies at various stages of the food supply chain, we can collectively reduce food waste, conserve resources, and minimise our environmental impact.
Based on the scenario provided, which statement best summarises the overall impact of the food waste reduction initiative?
1. Food waste reduction conserves resources and minimises environmental impact.
2. Food waste reduction improves food security and reduces hunger.
3. Food waste reduction promotes sustainable agriculture and economic growth.

Q.7

You are part of a student-led environmental club focused on sustainability within the local community. As part of a research project, your team collected data on food waste percentages at different stages of the local food supply chain.
Considering the information provided, which of the following strategies could effectively reduce food wastage?
1. Optimise transportation methods
2. Implement quality control
3. Promote landfill disposal
4. Minimise overproduction

Q.8

Jason is an environmental enthusiast concerned about the sustainability of fish and seafood due to overfishing and its impact on marine ecosystems. He's looking for alternative protein sources to reduce his reliance on fish and seafood in his diet.
What are some alternative protein sources that Jason can consider to help reduce his reliance on fish and seafood?
1. Plant-based proteins such as beans and lentils
2. Soy-based products like tofu
3. Vegan products such as sunflower and olive oil

Q.9

In a city, a significant portion of food from households and restaurants is discarded. Which factor explains the direct link between food waste and its contribution to greenhouse gas emissions and climate change?

Q.10

You're in the market to purchase a new refrigerator for your home. While browsing, you notice an Energy Star label on a refrigerator that displays a rating of 3. Intrigued by this energy efficiency indicator, you decide to understand what this rating signifies.
What does an Energy Star rating of 3 on a refrigerator indicate?