Lecture7_GEOG1400

C 1 cal 4184 kj 4184 j water water melting melting

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Unformatted text preview: g. C: 1 cal =4.184 KJ (4184 J) Water Water Melting Melting Freezing Freezing Evaporation Evaporation Familiar Terms Sublimation Sublimation Sublimation Sublimation describes the direct describes the direct transition transition from solid to vapour (ice cubes shrink from tray). Deposition Deposition the reverse - when ice crystals are deposited crystals are deposited on on the the ice directly. Frost formed on a cold cold winter night is an example. Water Water-The Global Perspective Global Perspective Importance oceans cover 2/3 of the earth Importance - oceans cover 2/3’s of the earth act act as a huge heat storage reservoir, help to redistribute heat from the equator to the poles Shapes Shapes the earth - rainwater erodes the earth as it moves to the seas Ecology Ecology - helps to move nutrients-impact on nutrientsdistribution of plants, animals Water Water in the air moves huge quantities of heat usually poleward heat usually poleward The Global Water Balance The Global Water Balance The The movements of water among the great global reservoirs constitute the HYDROLOGIC CYCLE Water Water moves from land and ocean to the atmosphere as water vapour and returns as precipitation....
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