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Class 5 (1210 questions)
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by AKSHAY GURU VARADHARAJAN
· Class 5
When a wide highway is built through the middle of a thick jungle, it causes "Habitat Fragmentation." How does this specifically harm large land animals?
(A) It gives them a smooth road to walk on.
(B) It divides their home into small "islands," making it hard for them to find enough food or a mate.
(C) It makes the forest look more organized and modern.
(D) Animals prefer to live near the noise of cars.
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Life On Land
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by AKSHAY GURU VARADHARAJAN
· Class 5
Why is "Deforestation" (cutting down trees) a leading cause of soil becoming infertile and blowing away?
(A) Trees provide shade that keeps the soil from melting.
(B) Tree roots act like "nets" that hold the soil together and prevent it from being washed away by rain.
(C) Trees produce a special glue that sticks the sand together.
(D) Cutting trees makes the wind blow in circles.
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Life On Land
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by AKSHAY GURU VARADHARAJAN
· Class 5
In an ecosystem, a "Keystone Species" is an organism that helps hold the entire system together. If the Tiger (a keystone species) disappears from a forest, what is the most likely result?
(A) The forest will become peaceful and safer for all animals.
(B) Herbivores (like deer) will overpopulate and eat all the plants, destroying the forest.
(C) Other predators like Lions will move in immediately to help.
(D) The trees will grow taller because no animals are climbing them.
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Life On Land
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by AKSHAY GURU VARADHARAJAN
· Class 5
In the 5 Rs of sustainability (Refuse, Reduce, Reuse, Repurpose, Recycle), why is "Refuse" considered the most effective step for the environment?
(A) Because it is the easiest word to remember.
(B) Because it prevents waste from ever being created by saying "no" to unnecessary items like plastic straws.
(C) Because refusing to do homework saves paper.
(D) Because it means you should never buy anything ever again.
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Responsible Consumption and Production
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by AKSHAY GURU VARADHARAJAN
· Class 5
If you see a "Fair Trade" or "Eco-Mark" logo on a product, what does it most likely tell you about its "Production"?
(A) The product is much cheaper than any other brand.
(B) The product was made using methods that are fair to workers and less harmful to the environment.
(C) The product was made by a famous celebrity.
(D) The product never expires and stays fresh forever.
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Responsible Consumption and Production
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by AKSHAY GURU VARADHARAJAN
· Class 5
Nearly one-third of all food produced in the world is wasted. Why is wasting a single apple also considered a waste of "hidden" resources?
(A) Because the apple could have been used to make a phone.
(B) Because of the "Virtual Water," land, and energy used to grow, transport, and pack that apple.
(C) Because the seeds inside the apple are made of gold.
(D) Because the apple will turn into a rock if not eaten.
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Responsible Consumption and Production
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by AKSHAY GURU VARADHARAJAN
· Class 5
Some companies design electronic gadgets to break or become slow after a few years so that customers are forced to buy a new one. This irresponsible practice is called:
(A) Rapid Production
(B) Planned Obsolescence
(C) Creative Engineering
(D) Product Upgrading
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Responsible Consumption and Production
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by AKSHAY GURU VARADHARAJAN
· Class 5
In a "Linear Economy," we take resources, make products, and throw them away. In a "Circular Economy," what is the primary goal?
(A) To make sure all products are shaped like circles.
(B) To design products so that materials can be reused, repaired, or recycled forever.
(C) To build more factories so we can produce things faster.
(D) To buy a new version of a gadget every year.
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Responsible Consumption and Production
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by AKSHAY GURU VARADHARAJAN
· Class 5
Many sustainable cities are building "Sponge Parks"—green spaces designed to soak up heavy rainwater. What specific urban problem does this solve?
(A) It provides free water for the city's fountains.
(B) It prevents "Urban Flooding" by allowing rainwater to seep into the ground instead of overflowing the drains.
(C) It helps in cleaning the windows of nearby buildings.
(D) It prevents the city from getting too dusty during the summer.
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Sustainable Cities and Communities
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by AKSHAY GURU VARADHARAJAN
· Class 5
A "Sustainable Community" must be "Inclusive." What does this mean in terms of city planning?
(A) Building only expensive houses so the city looks rich.
(B) Ensuring all public places like parks and buses are easily accessible to the elderly and people with disabilities.
(C) Making sure everyone in the city owns a smartphone.
(D) Building more shopping malls than schools.
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Sustainable Cities and Communities
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by AKSHAY GURU VARADHARAJAN
· Class 5
Sustainable cities often plan for "Green Belts"—areas of parks and trees surrounding or inside the city. What is a primary "Green Warrior" reason for this?
(A) To provide a place for people to take beautiful photos.
(B) To act as "lungs" for the city by filtering air pollution and providing oxygen.
(C) To make sure the city doesn't grow too large.
(D) To provide wood for building more houses.
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Affordable and Clean Energy
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by AKSHAY GURU VARADHARAJAN
· Class 5
A sustainable city encourages "Public Transport" over private cars. If 50 people take one bus instead of 50 separate cars, what is the most direct benefit to the community?
(A) The bus travels much faster than a car.
(B) It reduces traffic congestion and lowers the total carbon emissions per person.
(C) People get to talk to each other more on the bus.
(D) It makes the roads look wider.
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Sustainable Cities and Communities
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by AKSHAY GURU VARADHARAJAN
· Class 5
In many big cities, the temperature is often 3 to 5 degrees higher than in the nearby countryside. This is called the "Urban Heat Island" effect. What is the main cause of this?
(A) There are too many people breathing in a small space.
(B) Concrete and asphalt (roads) absorb sun heat during the day and release it at night.
(C) Skyscrapers are closer to the sun, so they get hotter.
(D) City lights are left on all night, which warms the air.
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Sustainable Cities and Communities
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by AKSHAY GURU VARADHARAJAN
· Class 5
"Desalination" is a process that turns salty ocean water into fresh drinking water. While it provides clean water, why is it not used everywhere?
(A) Saltwater is too heavy to be pumped into machines.
(B) It requires a massive amount of energy and produces "Brine" (super-salty waste) that can harm marine life.
(C) The salt removed from the water is poisonous and cannot be touched.
(D) Ocean water disappears if you try to take the salt out.
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Clean Water and Sanitation
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by AKSHAY GURU VARADHARAJAN
· Class 5
Sometimes, water contains high levels of minerals like Calcium and Magnesium. This is called "Hard Water." Why is using hard water for "Sanitation" and cleaning a challenge?
(A) It is too heavy to carry in a bucket.
(B) It prevents soap from forming a lather (bubbles), making it harder to clean things.
(C) It turns into ice even at room temperature.
(D) It makes the water taste like sugar.
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Clean Water and Sanitation
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by AKSHAY GURU VARADHARAJAN
· Class 5
It takes about 15,000 litres of water to produce just 1kg of beef, and 2,700 litres to make one cotton T-shirt. This "hidden" water used in the production of items is called:
(A) Transparent Water
(B) Virtual Water
(C) Magic Water
(D) Recycled Water
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Clean Water and Sanitation
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by AKSHAY GURU VARADHARAJAN
· Class 5
In areas without proper "Sanitation" (toilets and sewage systems), human waste often enters local rivers. Which of these is the most dangerous immediate result of this?
(A) The river water becomes too warm for fish.
(B) The water changes colour to bright blue.
(C) The spread of water-borne diseases like Cholera and Typhoid.
(D) Plants near the river grow much taller than usual
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Clean Water and Sanitation
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by AKSHAY GURU VARADHARAJAN
· Class 5
In many cities, people pump out "Groundwater" using borewells. If we take out water faster than the rain can refill it, the "Water Table" drops. What is the most likely long-term result of this?
(A) The soil becomes extra fertile for farming.
(B) Land subsidence (the ground actually sinking) and dried-up wells.
(C) The ocean level will drop because all the water goes underground.
(D) Rainwater will stop falling from the clouds.
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Clean Water and Sanitation
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by AKSHAY GURU VARADHARAJAN
· Class 5
Which of the following best describes why Fossil Fuels (Coal and Petroleum) are called "Non-Renewable" energy sources?
(A) They are very expensive to buy in the market.
(B) They take millions of years to form and cannot be replaced once used.
(C) They are made from modern-day plants and animals.
(D) They can only be found in a few countries in the world.
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Affordable and Clean Energy
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by AKSHAY GURU VARADHARAJAN
· Class 5
Solar energy is a great "Clean Energy" source, but it has a specific limitation. Which of the following is a major challenge for solar power?
(A) It produces too much carbon dioxide during the day.
(B) Solar panels work better when it is raining.
(C) It is "intermittent," meaning it cannot produce electricity at night or during very cloudy weather.
(D) Using solar energy makes the sun lose its heat faster.
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Affordable and Clean Energy
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