Precipitation-water cycle, Biology


Precipitation literally means falling from a height. In case of water, precipitation includes all forms in which atmospheric moisture descends to earth; rain, snow, hail, sleet and dew. The moisture that enters the atmosphere by the vaporisation of water condenses either into liquid (rain) or solid (snow, hail and sleet) before it can fall. Water returns to the land and the sea from the atmosphere by means of condensation, deposition and precipitation. Condensation is defined as the process by which water changes from vapour phase to a liquid state (in form of dew droplets). Deposition is the process by which water changes directly from a vapour into a solid (ice crystals) phase. In the atmosphere tiny droplets of water and ice crystals produced through condensation and deposition form clouds. You have to keep in mind that vaporisation absorbs energy (evaporation of sweat cools your body by using up excess body heat.) The energy used up in vaporisation is released when the water vapour condenses. The major amount of water on earth, is received as rainfall.

The water cycle in nature is sustained by energy from the sun. Solar energy evaporates water from the sea and the land. Water vapours condense in the atmosphere to form clouds which are transported to long distance by wind currents. Rainfall and melted snow replenish water in rivers, which cany it back to to sea.

Posted Date: 12/11/2012 12:16:12 AM | Location : United States

Related Discussions:- Precipitation-water cycle, Assignment Help, Ask Question on Precipitation-water cycle, Get Answer, Expert's Help, Precipitation-water cycle Discussions

Write discussion on Precipitation-water cycle
Your posts are moderated
Related Questions
Define Barrier layer cells (photocells) They are the very simple of the detectors. It contains the bottom support layer of conductive metal like iron. A photosensitive layer of

Q. What is the basic Role of Botanic Garden? A botanic garden makes us to simply enjoy the beauty and variety of nature. The pleasure of admiring turns us into good naturalists

C o mbination of meat products Combining meats and byproducts of different species to produce value added products results in complementation and supplementation of their qua

Q. What is signifying by suction force of the plant cell? Does the suction force facilitate or make difficult the entry of water into the cell? The suction force (SF) is the os

Malignant catarrhal fever (MCF) Malignant catarrhal fever is invariably fatal generalized lymphoproliferative disease of cattle and sometimes of wild ruminants. It is common i

Basic Research Terms: Some of the basic  terms that are defined  in  this section are:  Assumptions Operational Definitions  Variables  Delimitation and Limitation  H

Q. Do the phylogenetically proximal species have cells with proximal chromosome counts? The number of chromosomes typical of each species is proximal for phylogenetically proxi

Describe the Intensity of S 2 in second heart ? Loud A 2 occurs in patients with hypertension, when aorta is closer to anterior chest wall owing to root dilatation or TGA or

Explain in details about Respiratory system Respiratory system starts from nostrils through which we inhale air in the nasal cavity. Then, air enters pharynx and goes through l

What are fossil fuels? Fossil fuels, like oil, gas and coal, form when organic material is preserved from the complete action of decomposers, generally buried deep and under pr