ESciChap7 - 1 What are the lessons to be learned from the...

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1. What are the lessons to be learned from the Aral Sea story? Lessons to be learned from the Aral Sea story is that water from a sea will run very low when irrigated. The water began to dry up making animals become extinct in that sea. It also changed the climate. Water resources aren’t always renewable and infinite. 2. Give examples of the infrastructure that has been fashioned to manage water resources. Examples of infrastructure that has been fashioned to manage water resources are damns, canals, reservoirs, aqueducts, sewer systems, treatment plants, water towers, elaborate pipelines, irrigation systems, and desalination plants. 3. What are the two processes that result in natural water purification? State the difference between them. Distinguish between green water and blue water. Two processes that result in natural water purification are evaporation and condensation. The differences between them is that evaporation is when water molecules break away moving them away from the earth whereas condensation is where water molecules rejoin by hydrogen bonding forming liquid water. Green water is water in vapor form originating from the soil and organisms – the source of water for precipitation. Blue water is precipitation, renewable surface water runoff, and groundwater recharge – the focus of management and the main source of water for human withdrawals and natural ecosystems.
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4. Describe how a Hadley cell works, and explain how Earth’s rotation creates the trade winds. A Hadley Cell is a system of vertical and horizontal air circulation predominating in tropical and subtropical regions and creating major weather patterns. When the Earth rotates, winds are deflected from the strictly vertical and horizontal paths indicated by a Hadley cell and tend to flow in easterly and westerly directions – the trade winds – which blow almost continuously from the same direction. 5.
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This note was uploaded on 04/07/2008 for the course ENV 1112 taught by Professor Wear during the Spring '08 term at Catawba College.

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ESciChap7 - 1 What are the lessons to be learned from the...

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