Earth Day Quiz For Class VI To VIII Organised By Kendriya VIdyalaya AFS Jaisalmer

Wind is a renewable source of energy because it is generated by the natural movement of air currents, which are constantly replenished by the sun's heat. Unlike non-renewable sources of energy such as fossil fuels, wind energy does not deplete or run out over time. As long as the sun continues to shine and heat the Earth's surface, wind will continue to be generated, making it a sustainable and renewable source of energy.

Earth Day is celebrated on 22nd April. This day is dedicated to raising awareness and promoting environmental protection. It serves as a reminder to individuals and communities to take action towards preserving and conserving the Earth's resources. The choice of 22nd April as Earth Day is significant as it marks the birth of the modern environmental movement in 1970, when millions of people came together to protest against environmental degradation and advocate for a sustainable future.

The correct answer is "All of the above" because carpooling helps reduce the number of vehicles on the road, thus reducing emissions. Following laws made by the EPA ensures that industries and individuals are taking necessary actions to minimize air pollution. Conserving electricity reduces the reliance on fossil fuels for energy production, which in turn reduces air pollution from power plants. Therefore, all of these actions contribute to reducing air pollution.

The correct answer is "All of the above" because all the mentioned groups of people, including students and teachers, authority and government, and people in the community, have a role to play in maintaining a clean, happy, and safe environment. Students and teachers can promote cleanliness and awareness among their peers, authority and government can enforce regulations and policies for environmental protection, and people in the community can actively participate in initiatives such as waste management and conservation. Together, these groups can contribute towards creating a better environment for everyone.

Carbon dioxide level can affect Earth's climate because it is a greenhouse gas. When there is an increase in carbon dioxide in the atmosphere, it traps more heat from the sun, leading to global warming and climate change. This can result in rising temperatures, melting ice caps, sea-level rise, extreme weather events, and disruption of ecosystems. Therefore, changes in carbon dioxide levels have a significant impact on the Earth's climate.

The ozone layer's main function is to protect the Earth from the harmful rays of the sun. It acts as a shield, absorbing and filtering out the majority of the sun's ultraviolet (UV) radiation. UV radiation can cause various health problems in humans, such as skin cancer and cataracts, and can also harm ecosystems and damage the DNA of living organisms. Therefore, the ozone layer plays a crucial role in maintaining the overall well-being of the planet and its inhabitants by preventing excessive exposure to harmful solar radiation.

The correct answer is "All of the above" because each of the options mentioned contributes to saving the environment. Growing more trees helps in reducing carbon dioxide levels and provides oxygen. Practicing the 3R's (Reduce, Reuse, and Recycle) helps in minimizing waste and conserving resources. Educating people about the importance of the environment and the measures to take care of it promotes awareness and encourages responsible actions. Therefore, all of these actions together can effectively contribute to saving the environment.

Waste produced by agriculture households, industry, mining, and other human activities can end up in various places such as ground water, oceans, and streams and rivers. This is because these activities can generate pollutants and contaminants that can be carried through runoff or leaching into different water bodies, including ground water, oceans, and streams and rivers. Therefore, all of these choices are possible destinations for the waste produced by these activities.

The responsibility of protecting the environment cannot solely be placed on one entity such as the government, NGOs, or environmental protectors. It is the collective responsibility of each and every individual to take care of the environment. Every person can contribute by making sustainable choices, reducing waste, conserving resources, and being mindful of their impact on the environment. This shared responsibility ensures that everyone plays a part in protecting the environment for future generations.

Carbon dioxide is primarily responsible for increased global warming because it is a greenhouse gas that traps heat in the Earth's atmosphere. When carbon dioxide is released into the atmosphere through human activities such as burning fossil fuels, deforestation, and industrial processes, it contributes to the greenhouse effect. This leads to an increase in the Earth's average temperature, resulting in global warming and climate change. Methane and nitric oxide are also greenhouse gases, but carbon dioxide is the most significant contributor to global warming. Sulphur dioxide, on the other hand, primarily contributes to air pollution and the formation of acid rain.

Coal is considered a non-renewable resource because once it is used up, it cannot be replaced. Unlike renewable resources such as solar or wind energy, coal takes millions of years to form and cannot be replenished within a human lifespan. Once coal deposits are depleted, there is no way to generate more coal, making it a finite resource.

Deforestation leads to the loss of habitat for approximately 70% of the world species. When forests are cleared, many animals and plants lose their natural homes and are unable to survive. This disruption in their habitat can lead to the extinction or endangerment of numerous species. The loss of habitat also affects the delicate balance of ecosystems, leading to a decline in biodiversity and ecological stability.

Earth Day is celebrated in over 174 countries around the world. This indicates that the event has gained significant global recognition and participation. The large number of countries involved highlights the widespread concern for the environment and the need for collective action to protect the planet.

Carbon is released into the atmosphere through respiration, where organisms release carbon dioxide as a byproduct of cellular respiration. Cow flatulence also releases methane, a potent greenhouse gas that contains carbon. However, photosynthesis is the process by which plants convert carbon dioxide into oxygen, effectively removing carbon from the atmosphere. Therefore, photosynthesis does not release carbon into the atmosphere, making it the correct answer.

Less rainfall in an area and higher temperature could lead to desertification. Desertification is the process by which fertile land becomes desert due to various factors, including climate change. When there is less rainfall and higher temperatures, it creates a drier environment, causing the soil to lose moisture and become arid. This leads to the degradation of vegetation and the loss of biodiversity, ultimately resulting in the transformation of the area into a desert-like landscape.

Renewable fuels emit fewer greenhouse gases. This means that when renewable fuels are used, they release a lower amount of greenhouse gases into the atmosphere compared to other types of fuels. This is beneficial for the environment as greenhouse gases contribute to global warming and climate change. By emitting fewer greenhouse gases, renewable fuels help to reduce the negative impact on the planet and mitigate the effects of global warming.

Smog refers to the combination of smoke and fog, resulting in a thick layer of pollutants in the air. It occurs when car fumes and factory smoke mix with fog, creating a hazy and polluted atmosphere in cities. Smog is a significant environmental issue as it can have adverse effects on human health and the environment.

By shortening your shower by 5 minutes, you can save 30 liters of water. This is because the longer you shower, the more water you use. By reducing the duration of your shower, you are effectively reducing the amount of water that flows out of the showerhead, resulting in water savings.

Acid rain is primarily known for causing damage to monuments, dying fish, and weakened trees. However, it is not directly responsible for the spread of disease. Acid rain can indirectly contribute to the spread of certain diseases by harming ecosystems and weakening trees, but it is not a direct cause of disease transmission.

Our home wastewater goes to irrigation. This means that it is used to water plants and crops. This is a common practice in many areas as it helps to conserve water and also provides nutrients to the plants. The wastewater is treated and filtered before it is used for irrigation to ensure that it is safe for the plants and does not harm the environment. This method of wastewater disposal is beneficial as it helps to reduce the strain on sewage treatment plants and also provides a sustainable solution for water usage.