International Green Warrior Olympiad Class 10 Previous Year Paper

Q.1

A team of environmental researchers embarked on an expedition to study the impact of rising temperatures on Arctic wildlife. During their research, they noticed a significant decline in the population of polar bears due to habitat loss caused by melting ice caps. Which of the following statements best describes the direct consequence of this decline in the polar bear population?

Q.2

A rural village has limited access to electricity, relying primarily on kerosene lamps for lighting. Kerosene use has been linked to respiratory problems and indoor air pollution. The village council is considering ways to improve access to clean and reliable electricity. Which of the following would be the most effective long-term solution to address both health concerns and energy needs?

Q.3

A group of conservationists is conducting a study in a coastal region known for its diverse ecosystem. They notice a significant decline in the population of native plant species due to the introduction of non-native plants by human activities. As they delve deeper into their research, they aim to assess the significance of native species within this ecosystem.
What role do native species most likely play in this coastal ecosystem?

Q.4

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.5

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.6

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.7

Imagine two households, the Smiths and the Joneses, who both live in similar apartments with identical appliances like refrigerators, washing machines, and TVs. However, their energy-saving habits differ.
Which scenario best demonstrates an effective energy-saving habit?
A. The Smiths replaced all their light bulbs with LEDs.
B. The Smiths run their dishwasher and washing machine with small loads.
C. Jonases seals air leaks around windows and doors to improve insulation.
D. Jonases leave their TVs and game consoles on standby mode overnight.

Q.8

You're the sustainability coordinator for your school, tasked with analysing and improving waste management practices. To assess current methods, you gather information on various practices used by students and staff.
Analyse each scenario and identify the most appropriate 5R category it falls into: Reduce, Reuse, Recycle, Repurpose, or Refuse.
Scenario 1: The school cafeteria replaces single-use plastic water bottles with reusable water bottles for students to bring from home.
Scenario 2: The school declines any subscription to promotional materials.
Scenario 3: The school installs motion sensor lights in hallways and classrooms to minimise unnecessary energy usage.
Scenario 4: The art department uses leftover fabric scraps from previous projects to create new artwork and decorations.
Scenario 5: The school has separate bins for paper, cardboard, and plastic bottles.

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

In a workshop discussing electronic waste reduction, participants explore devices that are more susceptible to shorter lifespans because of rapid advancements in technology and frequent model upgrades. Which of the following devices is MOST prone to shorter lifespans due to these factors?