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Schematic diagram of an overshot water wheel. Date: 11 March 2007 (original upload date) (Original text: March 11, 2007) Source: Transferred from to Commons. (Original text: Original artwork by Daniel M. Short) Author: The original uploader was DanMS at English Wikipedia. (Original text: Daniel M. Short) Other versions
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The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the environment. When it condenses, it releases energy and warms the environment.
In the Malkus waterwheel, a constant flow of water pours in at the top bucket of a simple circular symmetrical waterwheel and the base of each bucket is perforated to allow the outflow of water. At low rates of inflow, the wheel rolls permanently in the same direction.