Uses Of Water Short Essay Topics
For water in its solid state, see ice.
Water is the most common liquid on Earth. It covers about 71.4% of the Earth. Pure water has no smell, taste, or color. Lakes, oceans, and rivers are made of water. Precipitation is water that falls from clouds in the sky. It may be rain (liquid) if warm, or it may be frozen if cold. If water gets very cold (below 0 degrees Celsius), it freezes and becomes ice, the frozen variant of water. If water gets very hot (above 100 degrees Celsius), it boils and becomes steam. Water is very important for life. However, some studies suggest that by 2025 more than half the people around the world will not have enough water.
Water is a fluid. Water is the only chemical substance on earth that exists naturally in three states. People know of over 40 anomalies about water. Unlike most other liquids such as alcohol or oil, when water freezes, it expands by about 9%. This expansion can cause pipes to break if the water inside them freezes.
Water is a molecule made of 2 hydrogenatoms and 1 oxygen atom. Its chemical formula is H2O. Like other liquids, water has a surface tension, so a little water can make drops on a surface, rather than always spreading out to wet the surface. Things having something to do with water may have "hydro" or "aqua" in their name, such as hydropower or aquarium, from the Greek and Latin names for water. It is also called the universal solvent, because it dissolves many things.
Uses of water[change | change source]
Plants and animals (including people) are mostly water inside, and must drink water to live. It gives a medium for chemical reactions to take place, and is the main part of blood. It keeps the body temperature the same by sweating from the skin. Water helps blood carry nutrients from the stomach to all parts of the body to keep the body alive. Water also helps the blood carry oxygen from the lungs to the body. Saliva, which helps animals and people digest food, is mostly water. Water helps make urine. Urine helps remove bad chemicals from the body. The human body is between 60% and 70% water.
Water is the main component of drinks like milk, juice, and wine. Each type of drink also has other things that add flavor or nutrients, things like sugar, fruit, and sometimes alcohol. Water that a person can drink is called "potable water" (or "drinking water"). The water in oceans is salt water, but lakes and rivers usually have unsalted water. Only about 3% of all the water on earth is fresh water. The rest is salt water.
Many places, including cities and deserts, don't have as much water as people want. They build aqueducts to bring water there.
Though people can survive a few months without food, they can only survive for a day or two without water. A few desert animals can get enough water from their food, but the others must drink.
Water is also used for recreational purposes, see list of water sports.
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|Wikimedia Commons has media related to Water.|
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Water is necessary for life. Water is needed for domestic, agricultural and industrial purposes.
Three-fourth of Earth's surface is covered by water bodies. 97 per cent of this water is present in oceans as salt water and is unfit for human consumption. Fresh water accounts for only about 2.7 per cent. Nearly 70 per cent of this occurs as ice sheets and glaciers n Antarctica and other inaccessible places. Only one per cent of fresh water is available and fit for human use. So it is very important to conserve this precious resource. And yet we are contaminating the existing water resources with sewage, toxic chemicals and other wastes. Increasing population and rapid urbanisation has led to over-use of water resources leading to water pollution and scarcity.
Water scarcity can be defined as a situation when people don't have enough water to fulfil their basic needs. India is one of the many countries that are facing water scarcity today. In Rajasthan and some parts of Gujarat, women have to cover long distances on foot in order to get a pot of water. In cities like Bangalore, a family has to spend from Rs. 15 to Rs. 20 to meet their daily water needs. The problem becomes severe during summer months when availability of water decreases again. A recent study has revealed that about 25 per cent of urban population lack the accessibility to fresh water. Also there are several cases of privatisation of water bodies. This often leads to water scarcity in the nearby areas.
There are different methods to deal with water scarcity. Rain water harvesting is the best and most suitable method. Forest and other vegetation cover reduce surface runoff and recharge ground water. So, practise afforestation. We can also promote water conservation through media and by conducting public awareness programmes.
By practising these simple steps we can conserve water and ensure the availability of water to future generations. So don't tarry; start saving each and every drop of water. Let our motto be “Save water, save life, save the world”.
Amrita is a Std IX student at B.M.M. English Medium School, Pampady, Kottayam