of given area and in a given time is measured with the help of a micrometre‚ from which the rate of evaporation per unit time per unit area is calculated. The pan rests on a carefully levelled‚ wooden base and is often enclosed by a chain link fence to prevent animals drinking from it. The rate of evaporation so obtained is multiplied by a suitable pan coefficient‚ so has to obtain the evaporation rate from the given water body. (A) U.S. Weather bureau Class “A” Pan. This pan is 1.2 m. in diameter
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the hydrosphere. Water on our planet can be stored in any one of the following major reservoirs: atmosphere‚ oceans‚ lakes‚ rivers‚ soils‚ glaciers‚ snowfields‚ and groundwater. Water moves from one reservoir to another by way of processes like evaporation‚ condensation‚ precipitation‚ deposition‚ runoff‚ infiltration‚ sublimation‚ transpiration‚ melting‚ and groundwater flow. The oceans supply most of the evaporated water found in the atmosphere (“The Water Cycle.”). Of this evaporated water‚ only
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atmospheric pressure‚ precipitation and evaporation rates were tested in each place‚ all with three trials then its average. A laboratory thermometer‚ slingshot psychrometer‚ barometer‚ graduated container cups and aluminium pan/containers were used respectively. Two containers were placed considering the physical conditions (if in direct sunlight or shade and indoors or outdoors). The experiment showed that the classroom environment has the least evaporation rate‚ most humid or the three locations
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Questions to answer from video Four Corners: Global Dimming • How does the film start? The film starts by talking about the green house effect and the natural disasters and also the terrorist attacks aftermath. • Who was Gerald Stanhill? – What was his occupation? – Why was he measuring solar radiation in the 1950s? – In which country did he take his measurements? – What did he find 20 years later? – Did anyone believe him? He is
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which liquid evaporates faster. II. Science Concept Evaporation is the process whereby atoms or molecules in a liquid state gain sufficient energy to enter the gaseous state. The rate of evaporation is dependent upon temperature‚ humidity‚ and wind speed. The higher the temperature is the quicker the rate of evaporation. In areas of low humidity‚ evaporation occurs at a more rapid pace. Finally‚ the higher the speed of wind the quick the evaporation process will be. The scientific method is
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lab activity is to investigate the relationship between the frequency of the light (color) and the energy produced by different colors of light. Other purposes of this experiment include calculating the proper current for each LED‚ measuring the evaporation rate of rubbing alcohol‚ and being able to discuss the outcome of the relationship in light energy and the color of the light producing the energy. Materials: Light Emitting Diodes (red‚ green‚ blue) LEDs and circuits (from previous lab) Pipette
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atmosphere‚ land‚ and ocean. There is a detailed description of the water cycle processes: evaporation‚ condensation‚ and precipitation. Evaporation is the process where liquid changes into a gas from bodies of water driven by the sun and becomes water vapor. Condensation is the process of gas changes into a liquid. Clouds are formed when the water vapor becomes denser. Precipitation is not a process like evaporation and condensation because it is a liquid or solid water that falls to earth and is cycled
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SAMPLE RESEARCH PAPER FOR SCIENCE FAIR Ms. Willis Excellent Evaporation Science Fair Research Paper By: Suzie Science Ms. Willis’ Class December 16‚ 2008 Background Information Liquids are all around us. Every day we drink and eat items that contain liquids‚ we use liquids to clean ourselves and our belongings and liquids can even be found in the places that we would not expect‚ like televisions. When someone watches liquid over time‚ an interesting thing begins to happen. The liquid
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report Anita Dey Thursday 8am Abstract: We recently performed a liquid nitrogen experiment in finding the Latent heat of the substance. We isolated two parts of the experiment in order to find out how much evaporation of the liquid nitrogen was from the surroundings B and how much evaporation from the electricity G. 1. When a substance is undergoing a phase transition‚ more heat (energy) is being added to the Substance but its temperature (a way of measuring its energy) is not changing. Where does
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Biodiesel: Technology & Business Opportunities – An Insight S Biswas‚ N Kaushik & G Srikanth Technology Information‚ Forecasting and Assessment Council (TIFAC) Department of Science & Technology‚ New Delhi – 110 016 Tel: +91-11 -2686 3816‚ Fax: 2696 1158‚ e-mail : biswas@nic.in The concept of bio fuel dates back to 1885 when Dr. Rudolf Diesel built the first diesel engine with the full intention of running it on vegetative source. In 1912 he observed‚ " … the use of vegetable oils for engine fuels
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