Water cycle.
Saturday, January 14, 2012
Transpiration
one final process is important in the water cycle.As plants absorb water from the soil, the water moves from the roots through the stems to the leaves .once the water reaches the leaves,some of it evaporates from the leaves,adding to the amount of water vapor in the air.And this process of evaporation through plant leaves is called transpiration.In large forests an enormous amount of water will transpire through leaves.
Surface Runoff
Much of the water that returns to earth as precipitation runs off surface of the land and flows down hill intoo streams,rivers,ponds and lakes.Further, small streams flow into larger streams ,then into rivers and eventually the water flows into the ocean.
Friday, January 13, 2012
Infiltration
precipitation
when the temperature and atmospheric pressure are right,the small droplets of water in clouds form larger droplets and precipitation occurs.The raindrops fall to earth.As a result of evaporation , condensation and precipitation,water travels from the surface of the earth goes into the atmosphere and returns to earth.Further, much of the water that returns to earth as precipitation runs off surface of the land and flows down hill into streams,rivers, ponds and lakes.And small streams flow into larger streams then into rivers and eventually the water flows into the ocean.This process is called precipitation.
Thursday, January 12, 2012
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