International Green Warrior Olympiad Class 10 Sample Paper

Q.1

John is considering installing a heating and cooling system in his new home. He wants an energy-efficient and environmentally friendly option. After researching various systems, he learned about geothermal heat pumps. Which of the following statements is true about geothermal heat pumps?
1. Geothermal heat pumps use the Earth's constant temperature to heat and cool homes.
2. Geothermal heat pumps maintain consistent efficiency in all weather conditions.
3. Geothermal heat pumps have a longer lifespan than traditional systems.

Q.2

Your town currently relies on chlorine for water disinfection, but concerns about its byproducts have prompted the exploration of alternative methods. Using ozone treatment during wastewater treatment (shown in the picture below) has emerged as a promising option.
Which of the following is the main advantage of ozone in water purification?

Q.3

A municipality is debating between establishing a waste-to-energy incineration plant or a biogas plant for managing its organic waste. Which option would be more environmentally sustainable, considering the waste reduction and energy generation potential?

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

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?

Q.6

During a summer heatwave, a meteorological study compares temperature variations between an urban area and its nearby rural surroundings. The findings are provided in the graph below.
Which of the statement(s) accurately describes the observed temperature variations between the urban and rural areas?
1. Urban areas generally have lower vegetation cover, leading to increased temperatures due to reduced shade and less evaporative cooling.
2. The urban areas have more concrete and asphalt surfaces, retaining more heat.
3. Decreased wind circulation in the rural area causes temperature drops.
4. Rural areas contain more open spaces, facilitating better air circulation and lower temperatures.

Q.7

In a region prone to erratic weather patterns, farmers face the recurring challenge of water scarcity. A group of agricultural researchers suggests adopting sustainable practices to mitigate the effects of drought. What would be the most effective way to implement this solution?

Q.8

The following table shows the average temperature and precipitation for three different biomes. Based on your understanding, answer the following questions.
A. Which biome is expected to experience the most severe drought stress due to reduced rainfall?
B. Which biome is expected to experience the most significant changes in soil drainage and nutrient availability due to melting permafrost?
C. Which biome is expected to experience the changes in the distribution of oak species due to rising temperatures?

Q.9

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.10

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?