Grade 4 Exam > Grade 4 Videos > Social Studies for Grade 4 > Our Water Resources
Our Water Resources Video Lecture | Social Studies for Grade 4
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FAQs on Our Water Resources Video Lecture - Social Studies for Grade 4
| 1. What are the major sources of water pollution? |  |
Ans. The major sources of water pollution include industrial waste, sewage and wastewater, agricultural runoff, and oil spills. These sources introduce various pollutants such as chemicals, heavy metals, pathogens, and nutrients into water bodies, which can have detrimental effects on aquatic ecosystems and human health.
| 2. How does water pollution affect human health? | |
Ans. Water pollution can have significant impacts on human health. Contaminated water can lead to waterborne diseases such as cholera, dysentery, and typhoid fever. It can also cause long-term health problems such as organ damage, developmental issues in children, and an increased risk of cancer. It is important to ensure access to clean and safe drinking water to prevent these health risks.
| 3. What are the consequences of over-extraction of groundwater? | |
Ans. Over-extraction of groundwater can have several consequences. It can lead to the depletion of aquifers, causing a decline in water levels and the drying up of wells. This can result in water scarcity, especially in arid and semi-arid regions. Over-extraction can also lead to land subsidence, as the emptying of aquifers causes the ground to sink. This can damage infrastructure, disrupt ecosystems, and further exacerbate water scarcity.
| 4. How does climate change impact water resources? | |
Ans. Climate change has significant implications for water resources. It can alter precipitation patterns, leading to changes in the availability and distribution of water. This can result in more frequent and severe droughts, floods, and storms. Rising temperatures can increase evaporation rates, reducing water availability in lakes, rivers, and reservoirs. Additionally, melting glaciers and ice caps contribute to rising sea levels, posing threats to coastal freshwater sources.
| 5. What are the main strategies for water conservation? | |
Ans. There are several strategies for water conservation. These include implementing efficient irrigation techniques in agriculture, promoting water-efficient appliances and fixtures in households, reducing water losses in distribution systems, and implementing policies for water pricing and incentives. Additionally, raising awareness about the importance of water conservation and promoting behavioral changes can also contribute to saving water resources.
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Nov 22, 2024 Last updated |
Video Description: Our Water Resources for Grade 4 2024 is part of Social Studies for Grade 4 preparation.
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