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Investigate how insulation can affect heat loss.

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Introduction

Science SC1 - Adaptions 1/ Huddling 2/ Insulation We will investigate Insulation 3/ Surface Area/Volume Things that could effect heat loss include: Conduction Convection What are they? Radiation We are going to do the following lessons in this order: * Planning * Planning and Trial * Observation * Observation * Analysis * Evaluation Planning In this investigation, we are going to investigate how insulation can affect heat loss. We will do this by using a beaker, with a set amount of hot water in it (50ml), and measure the temperature loss over a set time, and record it. Then, we will wrap a paper towel around the beaker, and measure the temperature loss again. We will then continue to add paper towels each time, and measure the temperature again. To ensure that we get a good set of results, we will do each test three times, and then find the average heat loss for each set of times. To make the test more fair, we will use the same beaker each time, so that the size and thickness of the beaker stays the same each time. ...read more.

Middle

0 5 10 15 20 25 2 42 41.8 39.6 45.7 42.1 46.1 4 39.7 40.8 39.5 43.7 41.3 46 No.Towels 6 38.4 39.9 39.3 42.7 40.6 45.4 8 37 39 38.7 41.6 39.7 44.4 10 35.5 38.1 37.6 40.1 38.8 43.3 This is the third set of results Time (Min) 0 5 10 15 20 25 2 42.6 42.5 42.5 44.6 44.7 44 4 41.3 40.5 41.6 43.1 43.5 43.5 No.Towels 6 40.5 39.9 41.3 42.5 42.1 43.4 8 39.8 39.5 40.8 42.2 41.6 42.9 10 39.5 39.3 40.2 41 41.1 41 These are the average results Time (Min) 0 5 10 15 20 25 2 42.7 42.1 41.5 44.1 42.7 43.7 4 40.9 40.7 40.8 42.9 41.9 43.3 No.Towels 6 39.9 40 40.3 42.1 41.2 42.8 8 38.9 39.2 39.8 41.4 40.5 42.1 10 38 38.6 39 40.3 39.9 40.9 To obtain all of the above evidence, we used: * One glass beaker * A large amount of paper towels * A kettle (to boil the water) ...read more.

Conclusion

(see graph). By looking at my graph, I can easily tell that my results are very wrong. There are a few reasons why these could be wrong. * Bad obtaining of results - I may have read the thermometer wrong at times, and made it out of line. * I could have written the times down in the wrong boxes in the results table * The water temperature could have been started at wrong temperatures * I may have obtained the results at intervals other than 2 minutes Looking at the graph, I think that one of the tables of results was done badly, and when finding the average, these results made the average wrong. Conclusion The first two results tables show, in a way, that the temperature does drop slower with more towels wrapped around the beaker. Therefore, I have found out that insulation helps to contain heat in one place. If I was to re-do this experiment, I would take a lot more care when taking all of the results, as I think that is where I went wrong. Sam Burgess 11K ...read more.

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