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Heat Loss Investigation

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Heat Loss Investigation Introduction My investigation is to find out the rate of which heat is lost or transferred. Heat loss happens when heat energy is exchanged between materials that are both at a two different temperature. There are different ways in which heat is lost they are: - conduction, convection, radiation and evaporation. All these processes can happen to heat. How am I going to carry out the investigation? I will be investigating the heat loss in animals and will be using cans to discover which can looses the most temperature. To do this experiment I will be using small, medium and large cans to perform as small, medium and large animals. Water will be positioned in these three different sized cans and the first measurement will be taken at the same temperature to keep it a fair test. I will be taking about eight readings at two minute intervals. Then I will repeat the procedure, this will then make it possible for me to take the averages. The Equipment I will require. * A small (150ml), medium (340ml) and a large can (520ml) - to position the hot water and then be able to put the thermometer into the cans to obtain the readings. * Stopwatch- needed to keep track of the time and to make sure the reading is taken at the right time. ...read more.


This is because the insulation slows down the process of heat loss. If the can is not insulated then heat loss will not slow down. If different types of insulation are used then this will affect the heat loss. Materials that have high insulation such as bubble wrap will not let much heat to be transferred through it. However materials of low insulation such as paper will let the heat pass through it much quicker. Amount of times the insulation has been wrapped around- Depending on how many times the material has been wrapped around the can will effect how fast the heat transfer is. If it has been wrapped once it will not work as well, but if it was warped twice or even more it would work much better. Room temperature- The bigger difference between the room temperature and the temperature of the water will mean more heat loss as the heat will want to escape. This is because if there is a bigger difference in temperature then the more heat will try to escape. Starting temperature of the water- If the starting temperature is high then the more heat will try to escape. Chosen factor- The factor that I will be investigating the heat loss between the sizes of the 3 different sized cans, which can losses the heat the quickest. ...read more.


They rise, but when the energy is used up the particles drop. This means all the heat will escape. Radiation occurred too. Evaporation happened when some particles with more energy than the average broke away from the attraction of other particles and escaped into the vapour phase. The average energy of the particles that remained are lower than before this meant that the liquid has cooled down. Evaluation Describe any problems that I had when carrying out my investigation. Whilst carrying out this investigation I had no problems that I can recall of. My investigation was problem free. Describe how accurate my results are. If there are some odd results which are they? My results are very accurate. I know they are very accurate because I have got similar results when I repeated the investigation. But if I did carry out another set of results these current results would become more accurate. I also know that they are very accurate because I did not get any odd results. The results I have are very close to each other and form a curve to show the fall in temperature. My results are reasonably easy to understand. What could I have done differently to make my results more accurate or reliable? To make my results more accurate and reliable I would repeat this investigation another once or twice more. By repeating the investigation it would make my results more and more accurate the further times I do this investigation. Science Coursework Usman Shafique ...read more.

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