![]() | The Wonders of the Hydrological Cycle The Hydrologic Cycle (or the Water Cycle) is a cycle of evaporation, evapotranspiration, precipitation and infiltration. The sun heats bodies of waters such as oceans and lakes, which causes the water to evaporate and form water vapor. Water vapor is also transpired from trees and soil. The collection of water vapor condenses to form clouds, which move around the globe by air currents. With the right conditions, clouds precipitate; some of the water absorbs into the ground to form an aquifer, and some runs into lakes and streams. This is a continuous cycle, however, human settlement has put a damper on the cycle. For example, industrial waste and toxins can pollute air and water, the building of dams disrupts the natural flow of water, the building of roads cause erosion, to name a few. In order to prevent further harm to the environment, we should consider the consequences of our actions to create a more eco-friendly environment for our future. |
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![]() | FLOWER POWER! ya I know, it's just lovely flowers and sweet music, but maybe we all need to chill a bit--this always makes me mellow and sleepy (track="sleep, queen of the night" from the album The Planet Sleeps |
![]() | Professor Peter Teaches Stomata It was for AP Bio |
![]() | NASA | Water for Tea: Part I View "Water for Tea: Part II" at: http://youtube.com/watch?v=9F5pdDCbBFg Want more? Subscribe to NASA on iTunes! http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=283424434 One of the critical components of the Earth's hydrological cycle is precipitation. Rainfall is essential for providing the fresh water that sustains life. Water cycling and the future availability of fresh water resources are immense societal concerns that impact every nation on Earth. In many respects, precipitation is truly the centerpiece of our planet's hydrological cycle, and understanding it is crucial to unraveling many of the uncertainties about Earth's climate. But, we cannot understand the water and energy cycle or predict weather and climate without an accurate knowledge of the intensity and distribution of global precipitation. Measurement of various aspects of precipitation represents one of the most challenging research problems in Earth science. The concept of Global Precipitation Measurement (GPM) is NASA's response to the need for accurate global precipitation measurement. In many respects, precipitation is truly the centerpiece of our planet's hydrological cycle, and understanding it is crucial to unraveling many of the uncertainties about Earth's climate. For more information visit: http://gpm.gsfc.nasa.gov/ |
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![]() | Una navidad sin Pluto - Español latino - Parte 1 Pluto al tratar de poner la estrella en el arbol de navidad sin el permiso de Mickey por un error se cae y destroza todo lo que Mickey habia arreglado para la fiesta de navidad y al Mickey enojarse con Pluto este se escapa de la casa... |
![]() | Travis - Why Does It Always Rain On Me Travis 8th music video |
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