had reflective silver on the inside of them. This may have been the reason for why the results turned out how they did. The black can decreased temperature quickly‚ it is expected that the black colour on the outside would have absorbed the heat that made it through the silver can and radiated it into the mediums around it. The white can decreased temperature the same amount as the black can. This may have been because there was no light so the can may have absorbed the heat and not reflected it as
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50cm3 water with a temperature above 50? b. Prediction and Hypothesis. Make a prediction about what you expect to be the outcome. Explain your prediction using scientific ideas. I predict that the bigger the surface area to volume ratio‚ the lesser the heat will be lost. And the smaller the surface area to volume ratio the more heat will be lost. Variables Independent Variable. The surface area‚ volume ratio of the beaker Dependent Variable. The temperature of the water/The
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What is the difference between temperature and heat? 2. What is a thermometer and what are its working principles? 3. Metal lids on glass jars can often be loosened by running hot water over them. Why does that work? Problems: 1. In an alcohol-in-glass thermometer‚ the alcohol column has length 11.82 cm at 0.0°C and length 21.85 cm at 100.0°C. What is the temperature if the column has length (a) 18.70 cm‚ and (b) 14.60 cm? 2. Show that if the temperature on the Celsius scale changes by ΔTC
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Paragraph 1: Crystal chemical relationship between quartz (SiO2) and FePO4 The following describes the crystal chemical relationship between quartz (SiO2) and FePO4. At temperatures below 980 K‚ FePO4 exists as alpha- FePO4. Beyond the temperature mark of 980 K (at 980 K or higher)‚ FePO4 exists as beta- FePO4. The geometrical symmetry of single cell of α- FePO4 is trigonal while the geometrical symmetry of β- FePO4 is octahedral structure. At the alpha phase‚ the cell parameters shoots up by a
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n-dodecane‚ isopropanol and water before and/or after calcination at different temperatures (300–600 °C). DTA-TG‚ XRD‚ TEM and BET analyses were performed to characterize the produced powders. Characterization results revealed that the materials were not crystallized‚ even the temperature reached up to 600 °C. The crystallization of (Th1ÀxCex)Oy began at about 600 °C. The crystal growth took place between the temperatures 600 °C and 1200 °C. The powders have a range average crystallite sizes from
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which will keep the highest temperature for the longest amount of time? Hypothesis: My hypothesis is that the metal insulated mug with the lid will retain the highest temperature for the longest amount of time. Likewise‚ the mug that will lose heat the fastest will be the plastic mug with no lid. Independent Variable: The variable that was purposely changed was the amount of time the mugs sat on the counter each trial. Dependent Variable: I hypothesize that the temperature of the liquids will change
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Research Question Investigate the effect of temperature on the rate of respiration of various parts of plants (germinating seeds and dormant (non-germinating) seeds)‚ by measuring the oxygen consumption and change in gas volume of respirometers containing either germinating or non-germinating seeds at different temperatures to measure the rate of respiration of these beans at different temperatures. Hypothesis 1.Germinating seeds have a higher rate of respiration as compared to non-germinating
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of the equator (Singh et al..‚ 2010). The Antarctic is an example of an extreme environment. An extreme environment is a habitat that most life-forms find intolerable‚ or even‚ sometimes‚ lethal (Rampelotto‚ 2013). It is the Antarctic’s average temperature of minus 60 degrees Fahrenheit‚ average ice depth of 6‚500 feet and the fact that the region contains around seven million cubic miles of ice that allows the Antarctic to be classified as an extreme environment (Mulvaney‚ 1997). As it is an extreme
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energy between regions of matter due to a temperature gradient. Heat spontaneously flows from a region of higher temperature to a region of lower temperature‚ and reduces temperature differences over time‚ approaching thermal equilibrium. Prepared by: Ms. Ana Antoniette C. Illahi 2 (Heat Current in Conduction) • • • • • • • • H - Heat Current dQ – Quantity of Heat dt – Time dQ/dt – the rate of heat flows A – Cross sectional area (TH - TC) – Temperature difference L – Length k – constant (thermal
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Fill in the blanks : (a) The hotness of an object is determined by its temperature. (b) Temperature of boiling water cannot be measured by a clinical thermometer. (c) Temperature is measured in degree Celsius. (d) No medium is required for transfer of heat by the process of Radiation. (e) A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by theprocess of conduction. (f ) Clothes of dark colours absorb heat better than clothes of light colours. Match the following
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