International Green Warrior Olympiad Class 7 Previous Year Papers

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Syllabus:

Clean Water and Sanitation

1. Introduction to clean water: Understanding the importance of clean water and proper sanitation, various sources of clean water, methods to purify water, water treatment plans, methods to filtre water
2. Proper sanitation and personal hygiene: Sanitation and personal hygiene practices and their impact on health, access to clean toilets and sanitation facilities
3. Waterborne diseases: Common waterborne diseases (e.g., cholera, dysentery), how waterborne diseases spread, prevention through clean water and sanitation
4. Water scarcity and global water issues: Exploring water scarcity in different regions, the role of climate change in water scarcity
5. Water pollution and treatment: Sources and types of water pollution, consequences of water pollution, wastewater treatment processes
6. Water conservation: The water cycle and its importance, strategies for water conservation, technologies for efficient water use

Affordable and Clean Energy

1. Sources of energy: Exploration of various energy sources (e.g., fossil fuels, renewable energy, nuclear), how energy is generated from different sources, environmental impacts of different energy sources
2. Renewable energy sources: Introduction to renewable energy sources (e.g., solar, wind, hydro, geothermal), how renewable energy systems work, advantages and challenges of renewable energy
3. Energy conservation and efficiency: Understanding the importance of energy conservation, practical tips for saving energy at home and school, energy-efficient technologies and practices
4. Introduction to clean energy: Understanding the concept of clean energy, differentiating clean energy from fossil fuels
5. Clean energy innovations: Innovations in clean energy technology, solar roadways and smart grids
6. Environmental impact of fossil fuels: Understanding the environmental impact of fossil fuel use, air and water pollution caused by fossil fuels

Sustainable Cities and Communities

1. Sustainable transportation and green infrastructure: Introduction to sustainable transportation, the role of electric and hybrid vehicles, bicycles as a sustainable mode of transportation, sustainable urban planning and green infrastructure
2. Characteristics of sustainable cities: Green infrastructure, urban farming, efficient public transportation, operations on renewable energy sources, waste management
3. Universal access to safe, inclusive, and accessible green and public spaces

Responsible Consumption and Production

1. The three r's: reduce, reuse, recycle: Importance of three r's of responsible consumption, strategies to reduce waste and consumption, creative ways to reuse items, introduction to recycling and waste separation
2. Responsible consumption of water and energy: Importance of conserving water and energy, practical tips for saving water and electricity, energy-efficient appliances and lighting
3. Responsible consumption of water and energy: Importance of conserving water and energy, practical tips for saving water and electricity, energy-efficient appliances and lighting

Climate Action

1. Introduction to climate change: Understanding the concept of climate change, differentiating between climate and weather, causes and effects of climate change
2. The carbon cycle: Understanding the carbon cycle, how humans disrupt the carbon cycle
3. Earth's climate systems: Introduction to earth's climate systems, the role of the atmosphere and oceans in climate regulation
4. The greenhouse effect: Explaining the greenhouse effect, how it affects the earth's temperature

Life Below Water

1. Conservation of marine life: Exploring marine protected areas and marine sanctuaries, importance of marine conservation for biodiversity
2. Threats to marine ecosystems: Identifying human activities that harm marine ecosystems (e.g., overfishing, pollution, habitat destruction), discussing the impact of climate change on oceans
3. Marine pollution and plastic waste: Sources and types of marine pollution (e.g., plastic waste, oil spills), impact of pollution on marine life and ecosystems, solutions and cleanup efforts

Life On Land

1. Introduction to terrestrial ecosystems: Understanding terrestrial ecosystems (e.g., forests, grasslands, deserts), importance of land-based environments
2. Endangered species and conservation: Introduction to endangered species, conservation efforts to protect endangered species
3. Major threats to terrestrial ecosystems: Habitat destruction and fragmentation, deforestation, overexploitation, pollution, agriculture practices, etc.

Food Security and Agriculture

1. Food choices and sustainability: The impact of food choices on the environment, reducing food waste at home and school, sustainable farming practices (e.g., organic, local), composting and its benefits
2. Climate change and food security: How climate change affects food production and agriculture, strategies for adapting to changing climates in agriculture

Sample Paper Marking Scheme Free Study Material

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Q.1	Maya and Ethan analyse a table showing the decline of multiple endangered species, each facing different threats. Based on the table, which of the following conservation strategies would likely be MOST effective for protecting ALL of the listed species? Species Primary Threat Population Trend Amur Leopard Habitat loss and poaching Decreasing Black Rhinoceros Poaching for horn Slowly increasing Sumatran Orangutan Habitat loss from deforestation Decreasing  Vaquita Entanglement in fishing nets Critically engangered
	a) Focusing solely on anti-poaching efforts.		b) Establishing more protected areas to conserve habitat.
	c) Implementing sustainable fishing practices to reduce entanglement.		d) Addressing multiple threats through a combination of conservation strategies.

Q.2	In a coastal city, citizens are concerned about the decreasing number of mangrove forests. What role do mangrove forests play in protecting marine ecosystems, and how can their depletion harm marine life?
	a) Mangroves prevent erosion and provide habitats; their depletion can lead to loss of breeding grounds for fish and increased coastal erosion		b) Mangroves absorb excess nutrients; their depletion can lead to overgrowth of marine plants and decreased oxygen levels in water
	c) Mangroves reduce ocean acidity; their depletion can lead to coral bleaching and loss of biodiversity		d) Mangroves filter pollutants; their depletion has no significant impact on marine life

Q.3	Consider the following scenario and choose the correct option. Scenario: You're a college student living in a shared hostel room with two other roommates. You've noticed increased common illnesses among your roommates, like colds, flu, and stomach upsets. You suspect poor hygiene might be playing a role. Instructions: Choose the MOST LIKELY way your hygiene habits could contribute to your roommates' health problems, and explain your reasoning.
	a) You always shower after gym class, but you only wash your hands before eating.		b) You keep your laundry hamper overflowing with dirty clothes for days before washing them.
	c) You clean your desk surface regularly, but you rarely disinfect your phone or laptop keyboard.		d) You use a common towel to dry your hands after washing them in the shared bathroom.

Q.4	Researchers observed a significant reduction in phytoplankton populations in a study area. What potential impact does this reduction have on the carbon cycle? 1. Decrease in atmospheric CO2 levels due to reduced photosynthesis. 2. Increase in CO2 levels as phytoplankton absorb less carbon. 3. No effect on the carbon cycle as phytoplankton are not significant carbon absorbers. 4. Elevated carbon sequestration in oceans as phytoplankton decrease.
	a) Only 1		b) Only 3
	c) Both 1 and 4		d) Both 3 and 4

Q.5	In a small-scale wastewater treatment experiment, a student used an activated sludge process to treat a sample of domestic wastewater as represented below. The student observed a significant reduction in the BOD levels. What is the role of activated sludge in this process?
	a) It introduces chemicals to disinfect the wastewater.		b) It physically filters out impurities from the wastewater.
	c) It separates oil and grease from the wastewater.		d) It provides a medium for the growth of microorganisms that break down organic matter.

Q.6	You've been tasked with managing a community composting project. Over a period of 20 days, you monitored the temperature changes within the compost pile. Based on the data depicted in the graph below, what could be the likely reason behind the observed fluctuations in temperature throughout the composting process?
	a) Insufficient aeration leading to anaerobic conditions and temperature fluctuations.		b) Adequate moisture levels causing microbial activity and temperature rise.
	c) Lack of moisture causing temperature variations as the decomposition process slows down.		d) Lack of compostable materials resulting in temperature fluctuations due to microbial imbalance.

Q.7	In a small town, the local government implemented a waste reduction program. They observed a decrease in greenhouse gas emissions over the years. To what extent do dietary choices contribute to this positive change?
	a) No impact, as waste reduction is solely related to recycling efforts.		b) Significant impact, as certain food choices can result in lower carbon emissions.
	c) Negligible impact, as emissions are primarily influenced by industrial activities.		d) Unrelated impact, as the waste reduction program focuses on non-food waste.

Q.8	Imagine you're a product designer excited about creating a fantastic new line of toys for kids that are eco-friendly as well. Which of the following toys is most likely made from sustainable material?
	a) A toy robot made from conventional plastic derived from petroleum.		b) A puzzle made from wood from the forest
	c) A toy car made from recycled plastic collected from beaches		d) A stuffed animal made from synthetic fibres and polyester materials.

Q.9	A community in a rural area is facing water quality issues due to the presence of microbial contaminants in their water supply. Which of the following water treatment methods would be the most effective in removing microbial contaminants and ensuring safe drinking water for the entire community?
	a) Filtration		b) Boiling
	c) Chlorination		d) Distillation

Q.10	Your once-sunny city seems shrouded in a hazy cloud of smog, especially during winter. Cars and factories are the main culprits, but everyone suffers from breathing difficulties and reduced visibility. Which air pollutants from fossil fuels are likely contributing to this smog, and how can your city combat these issues?
	a) Fine particulate matter from car dust and industrial activities traps pollutants in the air, worsening smog. Investing in public transportation and green spaces can alleviate the problem.		b) Carbon dioxide, the main greenhouse gas from fossil fuels, directly contributes to smog, and the solution lies solely in switching to renewable energy sources like solar and wind.
	c) Nitrogen dioxide and sulphur dioxide from vehicle exhausts and factory emissions combine with sunlight to form harmful smog, which can be tackled by promoting electric vehicles and stricter emission regulations.		d) Smog is primarily caused by natural phenomena like dust storms and forest fires, and the city should focus on preparing for these events rather than blaming fossil fuels.

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