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FAQs on Mind Map: Water - Science for Class 2
| 1. What are the different states of water and how do they change? |  |
Ans. Water exists in three main states: solid (ice), liquid (water), and gas (water vapor). These states can change through processes such as melting (solid to liquid), freezing (liquid to solid), evaporation (liquid to gas), and condensation (gas to liquid). For example, when ice is heated, it melts into water, and when that water is heated further, it evaporates into vapor.
| 2. Why is water important for living organisms? | |
Ans. Water is essential for all living organisms as it plays a crucial role in various biological processes. It helps in digestion, nutrient absorption, temperature regulation, and waste elimination. Additionally, water is a solvent for many biochemical reactions and is vital for maintaining cell structure and function.
| 3. What is the water cycle and its significance? | |
Ans. The water cycle, also known as the hydrological cycle, describes the continuous movement of water on, above, and below the surface of the Earth. It includes processes such as evaporation, condensation, precipitation, and infiltration. This cycle is significant as it ensures the distribution of water across the planet, supports ecosystems, and replenishes freshwater sources.
| 4. How do human activities impact water quality? | |
Ans. Human activities such as industrial discharges, agricultural runoff, and urbanization can significantly affect water quality. Pollutants from these sources can contaminate water bodies, leading to issues like waterborne diseases, loss of aquatic life, and disruption of ecosystems. It is crucial to adopt sustainable practices to protect and preserve water quality.
| 5. What are some common methods of water conservation? | |
Ans. Water conservation can be practiced through various methods, including fixing leaks, using water-efficient appliances, collecting rainwater, and adopting xeriscaping techniques in landscaping. Additionally, raising awareness about the importance of saving water and implementing community programs can further promote water conservation efforts.
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Document Description: Mind Map: Water for Class 2 2025 is part of Science for Class 2 preparation.
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