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Why is water essential on earth
Why is water important and essential for continued life on earth
Why is water important and essential for continued life on earth
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Hydrosphere
The hydrosphere consists of all of the water on, in and around Earth. The water in the hydrosphere is distributed among the ocean, glaciers and ice caps, groundwater, surface water and water in the atmosphere in the form of water vapor and clouds. The water is present in all three phases: solid, liquid and gas.The hydrosphere includes water that is on the surface of the planet, underground, and in the air.A planet's hydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers. It also exists below ground as groundwater, in wells and aquifers.
The hydrosphere is the liquid water component of the Earth. It includes the oceans, seas, lakes, ponds, rivers and streams.
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More than 71% of Earth's surface is covered with water. The total amount of water on Earth is approximately 333 million cubic miles. Only a small fraction of the total amount of water on Earth is available for drinking, washing and irrigating crops because most of it is either salty or frozen.
The global ocean along with seas and bays, accounts for 97% of all the water on Earth, about 321 million cubic miles. Ocean water is salty and is not suitable for drinking or other everyday uses. Only 3% of the water on Earth is fresh (not salty). Over two-thirds of the freshwater is in the form of ice, in glaciers, polar ice caps or permafrost. Another 30% of the freshwater is groundwater. This leaves less than 1% of the freshwater, or 0.007% of the total water on Earth, on the surface in lakes and rivers that are easily accessible.
The hydrologic cycle, also known as the water cycle, describes how all the water in the hydrosphere continually moves between oceans, lakes, rivers, land and atmosphere. During the course of the water cycle, water changes state from liquid to gas and back to liquid. The energy that drives the hydrologic cycle comes from the sun. The steps in the water cycle are evaporation, condensation, precipitation and runoff. Transpiration is an additional element in the water
Colorado River Hydrosphere A case study of * River management * People interfering in the hydrosphere * Balancing water from one area to another The Colorado river - basic facts It flows through southwest United States and northwestern Mexico. It is 2334 km (1450 miles long), the longest river west of the Rocky Mountains. Its source is west of the Rocky Mountains which is the watershed in northern Colorado, and, for the first 1600km (1000miles) of its course, passes through a series of deep gorges and canyons that were created by the eroding force of its current. The river flows in a generally southwestern direction across Colorado into south eastern Utah, where it is joined by its chief tributary, The Green River. After crossing the northern portion of Arizona, the Colorado flows west for 436 km (271 miles) through the majestic Grand Canyon.
Water has three stages—liquid, gas and solid. Water on Earth can be liquid as rain, streams, or oceans. It can be a solid like hail, ice or snow. It can be a gas like vapor, steam or clouds. As described by the Department of Atmospheric Sciences (2010), the hydrologic cycle is the process of water changing from liquid to gas to solid. The energy of the sun drives the changes to water. When water is heated up, it evaporates, turning into a gas to form steam or vapor. The water vapor rises with warm air that when meets cooler air, condenses to form clouds. These clouds and water vapor can be transported around the world. Precipitation is when water falls to Earth, in warmer temperatures as liquid and in temperatures, as a solid. On Earth, precipitation can evaporate again or infiltrate the Earth to become groundwater. As ground water it can collect in oceans, rivers or on snowy mountaintops and glaciers. It can also be released back into the atmosphere via transpiration, when water evaporates off soil, trees. When water evaporates, the cycle starts again.
Hydrosphere: This is where the water sphere is located. It is made up of everything
There are numerous stages that take place simultaneously in the hydrologic cycle and this includes evaporation. This is when the water alters from a liquid state into a gas. The damp air from the water rises into the atmosphere and when it cools, the vapor condenses and shapes into clouds. But those billows are not the only form the vapors make; it can also materialize as dew, fog and mist, which blanket the Earth, characteristically on a rainy or humid day. Evaporation takes place when water changes from a liquid state into a gaseous state, and ascents out of the pores of the earth and into the atmosphere as a vapor (“How”). While evaporation is taking place, condensation is also occurring. When the temperature in the air plunges, the clouds become heavy and as a result they relieve themselves of the extra weight, which is called precipitation. This produces rain, hail, snow and sleet, conditioned upon the temperate. As the precipitation falls, it enters the surface of the ground and percolates into the soil, which is called infiltration. The more porous the land is, the more the infiltration can take place. However, the ground cannot hold all of that water and floods. The excess rainfall, which is also called runoff that has not been absorbed makes its way into bodies of water, such as small ponds, rivers, lakes and parts of the ocean (“Summary”).
The hydrologic cycle is how water moves through the natural process of evaporation, condensing as clouds and then falling back to the earth as rain, sleet, snow or fog. The Hydologic Cycle as defined by Lutgens F. and Tarbuck E. (2013), “The unending circulation of Earth’s water supply. The cycle is powered by energy from the sun and is characterized by continuous exchanges of water among the oceans, the atmosphere, the geosphere and the biosphere.” In Napa California the hydrologic cycle is when water enters the system as rainfall and leaves the system as either runoff to the San Francisco Bay or evaporates back into the cycle.
Pollution comes in many forms. In the ocean we dump a variety of substances, including human wastes, chemicals from fertilizers, oil, and trash such as plastic which all contribute to the growing issue of our ocean pollution. In addition to, our usable waters are finite. More than 97.5 percent of the water on this planet is undrinkable salt water; the remaining 2.5 percent has two-thirds of the usable fresh water locked up in glaciers, snow, and permafrost. Of the one-third of freshwater that is available for human use, 20 percent is used for industrial use. (“Water Pollution”) “In effect, water pollution reduces the volume of water available for use by human and other populations.” (Robin Clarke, Jannet King) Knowing that there are approximately 7.2 billion people and growing on this planet with only 0.83 percent of available for our use wouldn’t you want to do everything possible to help put an end to water pollution? (worldometers)
The ocean takes up about 71 percent of the world, and, oddly enough, if someone can’t grasp how massive that is, it is also 1.3 billion cubic kilometers, holding over 99 percent of area that
The hydrosphere is an open system that contains all of a planet's solid, liquid, and gaseous water (Answers.com). As an open system, the hydrosphere interacts with the surrounding systems through inputs and outputs (Lenkeit).
Earth is the only planet in the Solar System that has liquid water. The ocean contains ninety seven percent of the earth’s water and covers almost three quarters of the planet. There are four different oceans, the Pacific, Atlantic, Indian, and the Arctic. Tides and currents occur in all three of these oceans. Many different kinds of fish and mammals also make their homes in these oceans. All of these oceans are connected to each other in some way. Humans find oceans to be very interesting, beautiful, and exploring.
Freshwater in the world makes up only a small portion of the water on the planet. While the percentage of water in the world is nearly 70%, only 2.5% is consumable. Even further, only 1% is easily accessible to basic human needs. According to National Geographic, “by 2025, an estimated 1.8 billion people will live in areas plagued by water scarcity, with two-thirds of the world's population living in water-stressed regions as a result of use, growth, and climate change.” With this current trend, water will become more immersed in environmental, economic, political, and social changes.
There is a global shortage of drinking water. A person might wonder how this can be if seventy percent of the earth’s surface is covered by water. Most of the Earth’s water is unsuitable for human consumption. Ocean water is salt water, which makes up 97.5% of all water on the planet. Freshwater is only 3.5% of all the water on Earth.
Water is on of the most precious natural resources that exist on our planet. “It is delivered from the atmosphere in the form of rain, snow, hail, fog, and condensation and returns to the atmosphere by evaporation and transpiration” (Hannigan 1969). Although many of us love activities that have to do with water, we disregard it and pollute out rivers, lakes and oceans. Slowly but surely we are going to harm out planet till no return. Protecting and conserving nature will secure a better future. 71% of earth is covered with oceans. Sounds like a lot right? Imagine ...
Less than 1% of the water supply on earth can be used as drinking water. By the time a person feels thirsty, his or her body has lost over 1 percent of its total water content. About 25,700 litres (6,800 gallons) of water is required to grow a day's food for a family of four. A child dies every 8 seconds from water-related diseases.
“Water is the lifeblood of this planet. Every time a good is bought or sold there is a virtual exchange of water. Every time we interact with water, we change it, redirect it, or otherwise alter its state. We have never learned how to efficiently manage water.”(Cluckie, 2009) Ian Cluckie, Professor of Hydrology and Water Management, emphasizes the fact that humans can’t survive without water. Although water is a renewable resource that can replenish under hydrological cycles, our intervention has interrupted its natural cycle causing its supply to decrease.(Cluckie, 2009)