Class 8 Exam  >  Class 8 Notes  >  Social Studies (SST) Class 8  >  Important Questions: Land, Soil, Water, Natural Vegetation and Wildlife Resources

Class 8 Social Science Important Question Answers - Land, Soil, Water, Natural Vegetation and Wildlife Resources

Q1: Explain how land use is influenced by physical and human factors.
Ans: Land use is influenced by physical factors like topography, soil, climate, and water availability, and human factors like population density and technology. These factors determine how land is utilized, whether for agriculture, forestry, urban development, or conservation.


Q2: Discuss the significance of water as a renewable resource and the reasons for freshwater scarcity.
Ans: Water is a vital renewable resource, essential for life. Freshwater scarcity is often due to over-exploitation, pollution, and location-specific availability (like glaciers or underground reserves), impacting its accessibility for human use.


Q3: What are the major threats to soil as a resource, and how can they be mitigated?
Ans: Major threats to soil include erosion, depletion, and pollution mainly due to deforestation, overgrazing, and excessive use of chemicals. Mitigation strategies include soil conservation methods like mulching, contour ploughing, and using sustainable agricultural practices.


Q4: Describe the interdependence of flora, fauna, and humans in the ecosystem.
Ans: Flora, fauna, and humans are interdependent within an ecosystem. Plants provide oxygen, food, and shelter; animals contribute to pollination, decomposition, and as part of the food chain; humans depend on both for food, resources, and ecological balance.


Q5: How does the topography of a region influence its land use pattern?
Ans: Topography affects land use patterns by determining the suitability of land for various purposes like agriculture, forestry, and urban development. Plains are often used for farming, while hilly areas may be used for grazing, forestry, or left undisturbed due to difficulty in cultivation.


Q6: Explain the role of weathering in soil formation.
Ans: Weathering is the breaking down of rocks and minerals on Earth’s surface, contributing to soil formation. It involves physical, chemical, and biological processes that break down rocks into smaller particles, mixing with organic matter to form soil.


Q7: Discuss how human activities are affecting the balance in the ecosystem.
Ans: Human activities like deforestation, pollution, urbanization, and overexploitation of resources disrupt the natural balance in ecosystems, leading to loss of biodiversity, habitat destruction, and ecological imbalances.


Q8: What are the consequences of land degradation?
Ans: Land degradation leads to reduced soil fertility, increased risk of natural disasters like floods and landslides, loss of biodiversity, and diminished land utility for agriculture and other human needs.


Q9: How does vegetation affect the water cycle?
Ans: Vegetation impacts the water cycle by transpiring water into the atmosphere, influencing rainfall patterns, and helping in groundwater recharge by slowing surface runoff, thus playing a crucial role in maintaining the water cycle.


Q10: Describe the various types of soil erosion and their impact on the environment.
Ans: Soil erosion types include water erosion (rain wash, riverine), wind erosion, and due to human activities (like deforestation, overgrazing). These lead to loss of topsoil, reduced soil fertility, and can contribute to environmental degradation.


Q11: Explain how different climates influence the types of natural vegetation.
Ans: Climate, mainly temperature and rainfall, determines the type of natural vegetation. Tropical climates support dense forests, temperate climates favor deciduous forests, and arid climates lead to shrublands or deserts.


Q12: Discuss the importance of water conservation and methods to achieve it.
Ans: Water conservation is crucial due to its limited availability. Methods include rainwater harvesting, efficient irrigation practices like drip irrigation, recycling and reusing water, and reducing wastage in daily use.


Q13: What role do national parks and wildlife sanctuaries play in conservation?
Ans: National parks and wildlife sanctuaries are designated areas for protecting biodiversity, conserving wildlife and their habitats, and maintaining ecological balance by preventing exploitation and degradation of natural resources.


Q14: Explain the process of land reclamation and its significance.
Ans: Land reclamation involves converting unusable land into usable form, like converting marshy or desert lands for agriculture or urban development. It's significant for increasing usable land area, supporting agriculture, and urban expansion.


Q15: How does industrial development affect land and water resources?
Ans: Industrial development often leads to land degradation, water pollution, and depletion of resources. It can cause soil contamination, overuse of water, and release of industrial effluents into water bodies, impacting ecosystems and human health.

The document Class 8 Social Science Important Question Answers - Land, Soil, Water, Natural Vegetation and Wildlife Resources is a part of the Class 8 Course Social Studies (SST) Class 8.
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FAQs on Class 8 Social Science Important Question Answers - Land, Soil, Water, Natural Vegetation and Wildlife Resources

1. What are the major factors that affect soil formation?
Ans. Soil formation is influenced by several factors, including climate, parent material, topography, organisms, and time. Climate affects the rate of weathering and the type of vegetation that grows, which in turn affects the organic matter content of the soil. Parent material refers to the rocks and minerals that weather and break down to form soil. Topography, such as slope and aspect, influences water drainage and erosion, which can affect soil formation. Organisms, such as plants, animals, and microorganisms, contribute to the decomposition of organic matter and the mixing of soil layers. Finally, the time it takes for all these processes to occur plays a role in soil formation.
2. How does water scarcity impact land resources?
Ans. Water scarcity has a significant impact on land resources. When there is a lack of water, it becomes challenging to sustain agricultural activities, leading to reduced crop yields and potential desertification of arable land. Water scarcity also affects natural ecosystems, as many plants and animals rely on sufficient water availability for survival. In areas with water scarcity, the competition for water resources intensifies, leading to conflicts and disputes over water rights. Moreover, the lack of water can contribute to soil degradation and erosion, further diminishing the quality of land resources.
3. What are the threats to natural vegetation and wildlife resources?
Ans. Natural vegetation and wildlife resources face various threats. One of the primary threats is habitat loss due to deforestation, urbanization, and conversion of land for agriculture. Pollution, including air and water pollution, also negatively impacts natural vegetation and wildlife. Climate change is another significant threat, as it alters ecosystems and disrupts the life cycles of many plants and animals. Additionally, overexploitation of natural resources, such as overhunting or overfishing, can lead to the decline or extinction of certain species. Invasive species and diseases can also pose a threat to native vegetation and wildlife by outcompeting native species or spreading diseases.
4. How does soil erosion impact land resources?
Ans. Soil erosion has detrimental effects on land resources. When soil erodes, it loses its fertility and ability to support plant growth. This can lead to reduced agricultural productivity and food insecurity. Eroded soil can also cause water pollution, as the sediment and nutrients washed away by erosion may enter water bodies, negatively impacting aquatic ecosystems. Moreover, soil erosion contributes to land degradation, making the land less suitable for various uses, including construction, recreation, and wildlife habitat. It also exacerbates the risk of landslides and floods, further damaging land resources.
5. What are the conservation measures for land, soil, water, natural vegetation, and wildlife resources?
Ans. Several conservation measures can be implemented to protect land, soil, water, natural vegetation, and wildlife resources. These include sustainable land management practices, such as reforestation, afforestation, and agroforestry, which help prevent soil erosion and maintain soil fertility. Conservation tillage techniques, such as no-till farming, can also reduce soil erosion. Proper water management, including rainwater harvesting and efficient irrigation methods, helps conserve water resources. Protected areas, such as national parks and wildlife sanctuaries, play a crucial role in conserving natural vegetation and wildlife. Additionally, promoting awareness and education about the importance of these resources and implementing policies and regulations to prevent their degradation are vital conservation measures.
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