changes in temperature expands the air inside of the basketball causing it to bounce higher. This experiment was decided by observations made while playing the sport basketball. It was observed that when a basketball is left in the sun and made warm‚ the ball bounces higher when dribbled than if left inside. Our assumed result was that an increase in temperature would cause an increase in air pressure causing the bounce of the basketball to increase. The independent variable was the temperature in which
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HOMEOSTASIS 2. TEMPERATURE REGULATION 3. INTERNAL TRANSPORT SYSTEMS 4. EXCRETION & WATER BALANCE but first‚ an introduction... Living Things are Made of Cells Homeostasis All living things are composed of microscopic units called cells. You learned in a previous topic about the structure of a cell and the functions of the organelles. DIAGRAM OF A LIVING CELL The enzymes that control all the chemical reactions in every living cell are very sensitive to the temperature and the pH
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insulated as calorimetry relies on the fact that temperature change only occurs within the solution and that no heat escapes to the surroundings. That is why it is important that calorimeters are well insulated. However‚ heat loss cannot be avoided so scientists‚ when conducting experiments‚ need to choose the calorimeter that allows least heat energy to escape‚ therefore‚ retaining as much heat within the solution Research Question: By measuring temperature change of the reaction between hydrochloric
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1.2 - Human Homeostasis Vocabulary: dehydration‚ heat stroke‚ homeostasis‚ hypothermia‚ involuntary‚ thermoregulation‚ voluntary Prior Knowledge Questions (Do these BEFORE using the Gizmo.) A thermostat is a device that regulates the temperature inside a building. 1. What does a thermostat do if it gets too cool? __It would turn on the heater or turn off the A/C___________ 2. What does a thermostat do if it gets too hot? ____It would activate the Air Conditioning or turn of the Heat
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mechanism was studied using I-button data loggers placed inside marshmallow peeps to record temperatures in two different microhabitats; one in a stream and the other on the bank adjacent to the stream. Five samples were placed in each microhabitat and temperature was recorded every minute for 20 minutes. It was hypothesized that turtles in moving waters‚ such as streams‚ would exhibit lower body temperatures than those residing on banks alongside streams due to convection of the moving water. The
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of a steady body temperature even under a variety of external conditions” Harvard. Based on the process of thermoregulation‚ animals are divided into two groups‚ ectoderms and endotherms. Ectoderms are animals that are poor thermoregulators‚ having their body temperature determined by the ambient temperature. Animals that fall into this category are reptiles‚ amphibians‚ and fish. On the other hand‚ endotherms are animals that can thermoregulate and keep their internal temperature constant regardless
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then press F2 Temperature‚ next press F1 Temperature vs. Time. 3. Half fill a 150-mL beaker with ice and water. Press calibrate to calibrate the temperature probe. When prompted‚ enter 0.0 *C as the actual temperature of the constant temperature bath (ice water). Press Enter. Insert the temperature probe in the ice water. Swirl the temperature probe until the temperature approaches and stabilizes near 0 *C (it may not read exactly 0 *C). Press Enter. 4. Remove the temperature probe from the
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raising the temperature. Stir with a glass rod occasionally to make sure the heating is uniform. Measure 50mL of cold distilled water and place in the calorimeter setup. As the water is heating‚ also monitor the temperature of the cold water to find when it reaches equilibrium. Record the temperature of the cold water to the nearest 0.2°C. When the water being heated reaches 70°C-80°C‚ remove from the heat and let it sit on the lab bench‚ stirring occasionally. Record the temperature of the hot water
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Pre-weighed Aluminum metal sample mass (mmetal) 20.09 g Temperature of boiling water and metal sample in the pot (Ti(metal)) dsdfa(Ti 99°C Temperature of cool water in the calorimeter prior to adding hot metal sample (Ti(water)) 24°C Maximum Temperature of water/metal in calorimeter after mixing (Tf) 28°C LEAD METAL Pre-weighed Lead metal sample mass (mmetal) 20.03g Temperature of boiling water and metal sample in the pot (Ti(metal)) 103°C Temperature of cool water in the calorimeter prior to adding
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experiment was on the basis of the concentration of Potassium Hydroxide affecting the temperature of water that it is dissolved in. One person stirred in the different concentrations of Potassium Hydroxide while the other measured the temperature as it rose after the pellets dissolved. At times it was difficult to ensure that the pellets were completely dissolved within the solution. Raw Data Table: The temperature of water after dissolving different concentrations of Potassium Hydroxide in it. Concentration
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