Water helps earth’s climate from getting too cold or too hold. Land absorbs as well as releases heat quickly from the sun. But the ocean release as well as absorbs heat slowly from the sun. So gentle wind comes from the oceans and gives warmth to the land during winter as well as coolness during summer.
To get rain people worshiped rain gods as well as prayed for rain. Often, when there is no rain, crops withered and starvation started. Sometimes the rain falls too heavily or too suddenly. At this time rivers overflowed and cause massive property destruction.
Some of the earth’s water is contained within natural objects as well as man made near the earth’s surface such as food stores, manufactured products, plant and animal bodies as well as water towers.
Salt water oceans hold 97% of surface water, factories, glaciers, and polar ice caps spring up. The factories as well as cities dump their wastes into the rivers and lakes, polluting them. During that time people look for new sources of water. Some cities do not make use of their supply because they do not have enough tanks for storage, distribution pipes or to pour for plants to meet the people’s needs.
As the demand grows for water, we will have to make better use of it. The more we learn about water, the better we will be able to meet this challenge.
Uses of Water
For drinking – The human body is anywhere from 55% to 78% water depending on body size. To avoid from dehydration, temperature, the precise amount depends on the level of activity, humidity as well as other factors, seven liters of water per day is necessary for the body to function properly. Most of this is ingested through foods or beverages other than drinking straight water. It is not clear how much water intake is needed by the healthy people, though most advocates agrees that eight to ten glasses of water daily in the minimum to maintain proper hydration. Humans require water that does not contain too many impurities. Some solutes are acceptable and even describe for taste enhancement and to provide needed electrolytes.
As a heat transfer fluid – Water and steam are used as heat transfer fluids in diverse heat exchange systems, due to its availability and high heat capacity, both as a coolant and for heating. In almost all electric power plants, water is the coolant, which vaporizes and drives steam turbines to drive generators. Water can also be used as a neutron moderator in the nuclear industry.
Recreation – Humans use water for many recreational purposes, as well as for exercising and for sports. Some of these include living, boating, waterskiing, and swimming. In addition, some sports, such as ice skating and ice hockey are played on ice. Water parks, beaches and lakesides are popular places for people to g to relax and enjoy recreation. Many find the sound of flowing water to be calming, too. Some keep fish and other life in aquariums or ponds for show, companionship and fun. Humans also use water for snow sports like snow boarding or skiing, which requires the water to be frozen. People may also use water for play fighting such as with water balloons, water guns, and snow balls. They may also make fountains as well as use water in their public or private decorations.
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