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Class 7 Geography Chapter 1 Practice Question Answers - Environment
Q1. What is a source of mineral wealth?
(a) Atmosphere
(b) Biosphere
(c) Lithosphere
(d) None of these
Ans: (c)
The Lithosphere is the solid outer layer of the Earth that consists of rocks, minerals, and soil. Minerals such as iron, coal, gold, and petroleum are found in the lithosphere.
Q2. The domain of water is referred to as:
(a) Hydrosphere
(b) Atmosphere
(c) Lithosphere
(d) None of these
Ans: (a)
The Hydrosphere includes all water bodies like oceans, seas, rivers, lakes, glaciers, and groundwater. It covers about 71% of the Earth's surface.
Q3. Who protect earth from the harmful rays and scorching heat of the Sun?
(a) Mechanical force
(b) Gravitational force
(c) Atmosphere
(d) None of these
Ans: (c)
The Atmosphere is a layer of gases surrounding the Earth. It acts as a shield and protects us from harmful ultraviolet (UV) rays and extreme temperatures.
Q4. Which of the following is a human made environment?
(a) Hydrosphere
(b) Economic
(c) Industries.
(d) None of these
Ans: (c)
Industries, buildings, roads, and bridges are examples of human-made environments because they are created by human beings.
Q5. When is the world environment day is celebrated?
(a) 5 July
(b) 5 June
(c) 5 January
(d)5 March
Ans: (b)
World Environment Day is celebrated every year on 5th June to raise awareness about environmental protection.
Q6. What is Environer/Environner means?
(a) Environment
(b) Aquarium
(c) Neighbourhood
(d) None of these
Ans: (c)
The word "Environment" is derived from the French word "Environner", which means "Neighbourhood" or "to surround".
Q7. Which one has solid crust or the hard top layer of the earth?
(a) Lithosphere
(b) Hydrosphere
(c) Atmosphere
(d) None of these
Ans: (a)
The Lithosphere is the solid outer layer of the Earth that consists of rocks and landforms like mountains, plateaus, and plains.
Q8. Plant and animal kingdom together made:
(a) Atmosphere
(b) Hydrosphere
(c) Biosphere
(d) None of these
Ans: (c)
The Biosphere is the part of the Earth where life exists, including plants, animals, and microorganisms. It is a combination of land, air, and water that supports life.
9. Which one has thin layer of air that surrounds the earth?
(a) Atmosphere
(b) Biosphere
(c) Hydrosphere
(d) None of these
Ans: (a)
The Atmosphere is the layer of gases surrounding the Earth, which provides oxygen for breathing and protects us from harmful radiation.
Q10. Which of the following is NOT a biotic component of the environment?
(a) Plants
(b) Animals
(c) Water
(d) Microorganisms
Ans: (c) Water
Biotic components include living organisms like plants, animals, and microorganisms. Water is a part of the abiotic (non-living) components of the environment.
Q11. Which is not a component of human environment?
(a) Land
(b) Religion
(c) Community
(d) All of these
Ans: (a)
Land is not a component of human environment. Human beings make cars, mills, factories and road Human beings modify natural environment and thus known as human made environment.
Q12. Which is not a natural ecosystem?
(a) Desert
(b) Aquarium
(c) Forest
(d) None of these
Ans: (b)
Aquarium is not a natural ecosystem. The relation between the living organisms as well as the relation between the organisms and their surroundings form an ecosystem.
Q13. What is the solid crust of the earth is called?
(a) Atmosphere
(b) Lithosphere
(c) Crust
(d) All of these
Ans: (b)
Lithosphere is the solid crust of the earth. It is made up of rocks and minerals and covered by a thin layer of soil. It is an irregular surface with various landforms such as mountains, plateaus, plains, valleys, et(c)
Q14. Which of the following factors influence the environment?
(a) Physical factors
(b) Biological factors
(c) Human activities
(d) All of these
Ans: (d) All of these
The environment is influenced by physical factors (climate, landforms), biological factors (plants, animals, microorganisms), and human activities (urbanization, deforestation, pollution).
Q15. What is the life support system among the following?
(a) Transportation
(b) Music system
(c) Environment
(d) Both (a) and (b)
Ans: (c)
Environment is our basic life support system. It provides the air we breathe, the water we drink, the food we eat and the land where we live.
The document Class 7 Geography Chapter 1 Practice Question Answers - Environment is a part of the Class 7 Course Social Studies (SST) Class 7.
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FAQs on Class 7 Geography Chapter 1 Practice Question Answers - Environment
| 1. What are the main causes of environmental pollution ? |  |
| 2. How can we reduce plastic usage in our daily lives ? | |
Ans.We can reduce plastic usage by opting for reusable bags, bottles, and containers, avoiding single-use plastics, recycling whenever possible, and supporting products with minimal packaging. Educating ourselves and others about the importance of reducing plastic can also help create a positive change.
| 3. What is the importance of biodiversity in the environment ? | |
Ans.Biodiversity is crucial for maintaining ecosystem balance, providing food, clean air, and water, and supporting various life forms. It also enhances resilience against environmental changes and diseases, ensuring sustainable development and health for future generations.
| 4. How do deforestation and climate change relate to each other ? | |
Ans.Deforestation contributes to climate change by increasing the amount of carbon dioxide in the atmosphere, as trees that absorb CO2 are removed. This leads to global warming, which further affects weather patterns, threatens wildlife, and disrupts ecosystems, creating a vicious cycle.
| 5. What are some effective ways to conserve water at home ? | |
Ans.Effective ways to conserve water at home include fixing leaks, using water-efficient fixtures, taking shorter showers, collecting rainwater, and only running dishwashers and washing machines with full loads. Educating family members about water conservation can also lead to significant savings.
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