Celsius

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    Cane Toad

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    RESEARCH QUESTION: This experiment will analyse the changes in performance of a cane toad in abiotic factors, such as temperature. HYPOTHESIS: Cane Toads exposed to a warmer temperature will more times per minute compared to cane toads exposed to a cooler temperature. METHODS: 16 cane toads were kept at a constant temperature in an insulated container (two treatments: 8 in 25 degree Celsius and 8 in 15 degree Celsius temperate environments). Toads were then taken out, one by one, and placed in a grassy area where their body temperature was recorded using an infrared thermometer. While being timed, with a stopwatch, for one minute the number of jumps the toad made was recorded. A standard stimulus (tapping a stationary toad on the posterior…

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    Simple distillation was used for a liquid whose boiling points is 25 degrees Celsius over the other liquid, whereas fractional distillation is used for liquids with boiling points that are closer than 25 degrees Celsius apart. To obtain the highest percent ethanol, fraction distillation is proven to be the most effective. Because the 2 liquids have a boiling point difference of about 25 degrees Celsius, we used both simple and fractional distillation to remove the ethanol from the water.…

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    The prediction for this experiment was: when the temperature hits 80 degrees Celsius, the catechol will be at its optimal absorbance. The alternate hypothesis tested for this following experiment was that there is a significant relationship between catechol and pH. In contrast, the null hypothesis states that there is no significant relationship between catechol and oxidase and pH. This hypothesis will be supported if the rate of catechol oxidase does not increase. The hypothesis was tested by…

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    For instance, the county’s annual mean temperature will experience a relatively significant change within a short time period. According to the USGS (United States Geological Survey), the annual mean temperature for Howard County for the 1980-1999 base period was 10.07 degrees Celsius, while the potential annual mean temperature for the 2040-2049 period is 11.42 degrees Celsius (USGS). This future projection means that the annual mean temperature for Howard County may potentially increase by…

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    Glow Sticks Experiment

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    The levels are 7 degrees Celsius and 40 degrees Celsius. Dependent variable: The dependent variable is the brightness of the glow-stick that was measured in the length of how long the light reflected in inches. Controlled variables: Glass size, amount of water, type of glow-stick, size of glow-stick, the setting of the glow-stick, how long the glow-stick is placed in the water, how long the glow-stick is handled and shaked and cracked. Experimental Control Group: The standard of comparison is…

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    is to gather the best data possible from this experiment. If not done this way, it could result in data points either much higher or lower depending on the time it was tested and if it differed from trial to trial. Vessel Containing H2O2 The vessel being utilized for each trial will be a test tube so that fluctuating surface area will not negatively impact the experiment itself. Materials: 12 mL of 2.0 Molar Potassium Iodide 1, 10 mL graduated cylinder 60 mL of Hydrogen Peroxide 1 hot…

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    Fermentation Essay

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    the present study was that at temperatures higher or lower than 40 degrees Celsius fermentation is inhibited. Alcoholic fermentation is used in food production such as brewing, winemaking, and baking (Campbell). Thus optimizing fermentation and understanding the effect of various environmental factors can have important economic and social benefits. The production of CO2 is being assessed to show the rate of fermentation at certain time intervals. This data could be used to optimize fermentation…

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    new data collection. Rubber stopper assembly obtained and connected to plastic tubing and valves. Connector attached at free end of tubing to the gas pressure sensor with a clockwise turn. Two-way valve left open. Rubber-stopper assembly inserted tightly into the 125 mL Erlenmeyer flask. Closed the two way valve so it was perpendicular with valve stem. Mode changed to selected events on labquest. Graph settings changed to display pressure vs. temperature graph, measurements recorded in kPa…

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    toluene, and one with an even mixture of the two. Along with this, there is also the goal of redistilling one of the fractions in order to further reduce impurities by leaving the fraction with only one of the two molecular compounds. Theory Boiling point and vapor pressure are related to one another in an inverse relationship—meaning that as boiling point increases, the vapor pressure decreases. Distillation refers to the process of separating a mixture of liquids based on the differences…

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    it and read what it says. “You’re sick, 39 degree Celsius” Mom said. Since then, I have asked my mother to teach me how to read the thermometer. Whenever there’s a family member who gets sick, it would be my turn to check their temperature, and give them their medication. Taking care of my family is always a pleasure. That is why I decided to have a career that is related to taking care of people, and I found that nurses do it. The road to be a nurse…

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