Class 3 Exam > Class 3 Notes > GK Olympiad for Class 3 > Achievers Section: Earth and Its Environment
Achievers Section: Earth and Its Environment | GK Olympiad for Class 3 PDF Download
Q1: Arrange the jumbled alphabets to form a type of Earth’s movement.
(a) Rotation
(b) Revolution
(c) Earthquake
(d) Volcano
Ans: (b)
Sol: The movement of the earth around the Sun is called revolution.
Q2: The Earth's magnetic field serves as a shield against ____________.
(a) Solar energy
(b) Solar wind
(c) Ozone layer
(d) The Moon falling to Earth
Ans: (b)
Sol: The magnetic field prevents solar winds from directly reaching the Earth's surface.
Q3: The temperature of the Earth's inner core is comparable to the surface of ____________.
(a) The Sun
(b) The Moon
(c) Jupiter
(d) Neptune
Ans: (a)
Sol: The inner core of the Earth has a temperature exceeding 5,000°C, similar to the Sun's surface.
Q4: ___________________ is the only planet in our Solar System with tectonic plates.
(a) Mercury
(b) Venus
(c) Earth
(d) Mars
Ans: (c)
Sol: Earth is the only planet with a crust divided into moving tectonic plates.
Q5: Which phenomenon occurs due to the Earth's revolution?
(a) Volcano
(b) Earthquake
(c) Seasons
(d) None of these
Ans: (c)
Sol: The Earth's revolution changes its distance from the Sun, leading to seasonal variations.
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FAQs on Achievers Section: Earth and Its Environment - GK Olympiad for Class 3
| 1. What is the importance of Earth’s environment for living beings? |  |
Ans. The Earth’s environment is essential for all living beings because it provides the air we breathe, the water we drink, and the food we eat. The environment includes various ecosystems like forests, oceans, and deserts, which support diverse forms of life. A healthy environment helps maintain balance in nature, ensuring that species can thrive and ecosystems function properly.
| 2. How can we protect our environment at home? | |
Ans. We can protect our environment at home by practicing simple habits like reducing waste, recycling materials, conserving water and electricity, and using eco-friendly products. Planting trees and maintaining a garden can also contribute positively to the environment. Additionally, educating family members about the importance of environmental protection encourages everyone to participate in eco-friendly practices.
| 3. What are some common environmental problems we face today? | |
Ans. Some common environmental problems include pollution (air, water, and soil), deforestation, climate change, and loss of biodiversity. These issues are often caused by human activities such as industrialization, urbanization, and improper waste management. They can lead to severe consequences for ecosystems and human health, making it crucial to address them through collective efforts.
| 4. Why is recycling important for the environment? | |
Ans. Recycling is important because it helps reduce the amount of waste that ends up in landfills, conserves natural resources, and saves energy. By recycling materials like paper, plastic, and metal, we can help decrease pollution and protect the environment. It also encourages the reuse of materials, which reduces the need for new raw materials and decreases environmental degradation.
| 5. How do plants contribute to a healthy environment? | |
Ans. Plants contribute to a healthy environment in several ways. They produce oxygen through photosynthesis, which is essential for the survival of most living organisms. Plants also help filter pollutants from the air and soil, provide habitats for many species, and prevent soil erosion. Additionally, they play a crucial role in the water cycle by absorbing and releasing water, thus maintaining ecological balance.
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