International Green Warrior Olympiad Class 8 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

Q.1

Q.2

Q.3

Q.4

Q.5

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Q.8

Q.9

Q.10

Q.1	A country is considering expanding its nuclear energy capacity. Which of the following key environmental considerations they should address before making a decision? 1. Proper disposal of radioactive waste and ensuring plant safety 2. Promoting wildlife conservation in the vicinity of nuclear plants 3. Increasing water usage for cooling reactors
	a) Only 1		b) Only 1 and 2
	c) Only 2 and 3		d) 1, 2 and 3

Q.2	The government of a city wants to switch to renewable energy sources to help the environment. Which of the following strategies could the city use to promote renewable energy adoption and reduce environmental impact?
	a) Implementing tax incentives for solar energy installations		b) Developing new coal mining projects to boost energy production
	c) Encouraging the use of gasoline-powered vehicles		d) Cutting down more trees to make space for wind farms

Q.3	At Greenway Middle School, the cafeteria decided to track food waste over a week. The given table represents the daily amount of food wasted. If the school wants to reduce food waste by 20%, how much food, in kilograms, should they aim to save each day? Day Food Waste (kg) Monday 2.8 Tuesday 3.5 Wednesday 4.2 Thursday 5.1 Friday 3.9 Saturday 3.2 Sunday 2.6
	a) 3.2 kg		b) 0.72 kg
	c) 5.06 kg		d) 25.3 kg

Q.4	Nick installed a solar panel system on his rooftop to harness solar energy for his home. He wants to understand the practical process behind solar energy generation. Help him understand what happens when photons from sunlight strike the photovoltaic cells in a solar panel system.
	a) They generate heat energy for space heating.		b) They release electrons, creating an electric current to power appliances.
	c) They produce hydrogen gas for fuel cells.		d) They heat up a storage tank of water for domestic use.

Q.5	In an area facing increased soil erosion due to extreme weather events linked to climate change, farmers seek strategies to protect soil health. What practice aligns best with sustainable soil management in such conditions?
	a) Clearing land for larger-scale monoculture to simplify farming practices.		b) Implementing agroforestry systems to prevent soil erosion and maintain fertility.
	c) Relinquishing organic matter addition to soil for fear of further erosion.		d) Applying chemical pesticides extensively to eradicate soil-dwelling pests.

Q.6	Max was studying the Earth's atmosphere in class. He learned about a special layer that shields us from harmful solar radiation. While explaining it to his friend, Sarah, she asked, "What's the name of this protective layer?"
	a) Ionosphere		b) Exosphere
	c) Troposphere		d) Stratosphere

Q.7	Maya and Ethan observe vibrant coral reefs, but they notice patches of white, bleached skeletons amidst the colourful corals. Choose the MOST likely factor triggering coral bleaching.
	a) Increased nutrient runoff from coastal farms, promoting algal growth that smothers corals.		b) Overfishing by large trawlers, disrupting the food chain and reducing herbivores that control algae.
	c) Rising ocean temperatures exceeding corals' stress tolerance, causing them to expel vital symbiotic algae.		d) Increased water pollution from industrial waste, introducing toxic chemicals that directly harm coral tissues.

Q.8	Emma's family discussed ways to reduce their carbon footprint. Which action contributes most to mitigating climate change on a personal level?
	a) Carpooling or using public transportation		b) Buying products with excessive packaging
	c) Leaving electronic devices on standby mode		d) Using single-use plastics regularly

Q.9	A group of researchers is discussing the causes and effects of climate change during a conference. They aim to pinpoint the accurate relationship between a specific human activity and its consequent impact on the environment. Which scenario correctly identifies a human activity and its corresponding impact on the environment?
	a) Increased usage of solar energy leading to ozone layer depletion.		b) Deforestation resulting in the loss of biodiversity and disruption of ecosystems.
	c) Reduced use of fossil fuels causing an increase in air pollution and smog formation.		d) Expansion of agricultural practices leading to a rise in sea levels and coastal erosion.

Q.10	In a coastal region, oil spills are a common occurrence due to shipping activities. Which ecological consequence can be observed in the affected marine ecosystem?
	a) Increased biodiversity and thriving fish populations		b) Coral reefs growing rapidly to filter out oil contaminants
	c) Mass mortality of marine life and damage to habitats		d) Faster recovery of oil-impacted areas than non-impacted ones

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