The Water And Hydrologic Cycle

water covers more than 70 percent of the planet's surface, making our rivers, lakes, oceans,

Water is probably the most important resource we as people have. Humans can survive without food for several weeks, but without water we would die in less than a week. On a slightly less dramatic note, millions of liters of water are needed every day worldwide for washing, irrigating crops, and cooling industrial processes, not to mention leisure industries such as swimming pools and water-sports centers. Despite our dependence on water, we use it as a dumping ground for all sorts of waste, and do very little to protect the water supplies we have.

“Water can be defined as a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, rain and is the basis of the fluids of living organisms. Water is located all around Canada as it takes up about nine percent of Canada. Canada has about 20 percent of the world’s fresh water however only 7 percent of that is renewable as most is trapped in underground aquifers and glaciers. Canada has about twenty percent of the world’s fresh water resources. Everyone uses water, as it is a basic need to live. Water is also used for agriculture and industrial purposes.

Water cycle, Evaporation, Condensation, Precipitation, Infiltration, Water table, Lake, River, Ocean, Snow, Runoff, Transpiration, groundwater, surface water, precipitation, droplets, rain.

Water is essential for life as we know it on earth. It is used by plants

Water plays a vital role in everyday life, from quenching your thirst on a hot summer day, to being one of the main ingredient of life in all aspects on earth.

Water is essential for life on earth. Water is needed for growing food, keeping ourselves clean, generating power, controlling fire and most importantly to stay alive! This list is simply non-ending. This shows that water is an integral part of our daily life and we are heavily dependent on it.

Water is considered as an essential for human existence. We all can survive without food for some day but no one can live without water at least two days. Human body consists of 70% percent of water and our globe is covered by 69.9% percent of water. But unfortunately the useable fresh water is just 2.5% out of it. Water is a social good, water is an economic good, water has ecological value and water has religious, moral and cultural value.

Water covers about two thirds of the total surface of Earth, but most of that is saltwater. Humans must drink freshwater to live. 97% of the water on Earth is saltwater, while only 3% of Earth's water is freshwater. And 70% of the freshwater is ice in glaciers, ice caps and permanent snow. The small amount of freshwater remaining is distributed for use to the Earth's 6 ¾ billion people for agriculture, industry,

HYDROLOGIC CYCLE The hydrologic cycle is a constant movement of water above, on, and below the earth's surface. It is a cycle that replenishes ground water supplies. It begins as water vaporizes into the atmosphere from vegetation, soil, lakes, rivers, snowfields and oceans-a process called evapotranspiration. As the water vapor rises it condenses to form clouds that return water to the land through precipitation: rain, snow, or hail. Precipitation falls on the earth and either percolates into the soil or flows across the ground. Usually it does both. When precipitation percolates into the soil it is called infiltration when it flows across the ground it is called surface run off. The amount of precipitation that infiltrates, versus the

Water is an ever-present chemical substance that consists of hydrogen and oxygen (H2O), and is essential for all known forms of life. It is mostly used in the liquid form, but can also be used in a solid form (ice), and also a gaseous form as we all know is called water vapour or steam. Approximately ninety-seven percent (97%) of the water on earth is salt water. While the other three percent (3%) is fresh water which slightly over two thirds is frozen in glaciers and polar ice caps. The remaining unfrozen fresh water is mainly found as groundwater, with only a small fraction present above ground or in the air.

Water is the lifeblood of every living creature on earth. Approximately 70 percent of the earth's surface is covered with water. Thought the wonders of nature, water can take on many different forms, form the water we drink, to the ice we use to chill a glass of lemonade, to the water vapor used to steam clean equipment equipment. It is easy to understand the significance water plays in our lives, but it may be much more difficult ot understand the water that exists below the earth's surface, called groundwater.

97% of surface water is found in the oceans and 2% found in surface ice. Only about1 % of water is found on land in rivers and natural hollows. A very small percentage of less than 1% of water is found as water vapour in the atmosphere. From now on we will refer to the different forms of water as:

Ground water is a source of drinking water. It is r usually purer than freshwater in lakes and rivers. The different forms/sources of ground water includes wells, tube wells, springs, geysers etc.

Water is our main source of our life. We need it to live, drink, bathe,