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Investigation To See How Conduction Affects Heat Transfer

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Introduction

Investigation To See How Conduction Affects Heat Transfer Safety How will you make sure your investigation is safe? What potential dangers are there? * Hot water * The copper calorimeter - the calorimeter will become very hot when it is filled with he hot water. Use protection when transporting the calorimeter. * The kettle - don't mix water with electricity. Fair Test How will the investigation be kept fair? What variables will be constant? How will you make sure they are kept constant? * The amount of water in the copper calorimeter - mark the calorimeter instead of measuring, as the water will transfer heat when it is being measured. * Cool the calorimeter down before using the next layer of insulation. ...read more.

Middle

Over what length of time? The results I will be taking will be a measure of how much heat the calorimeter is losing. I intend on taking three sets of results for each layer and then taking the average. I will take a time reading every minute for 13 minutes. Prediction Linking to Theory I predict that with one layer, the heat will be transferred faster than with two or three layers. The time taken to heat will increase with every layer added. This is because the layers act as insulation and the carpet has air pockets within it. Air is a good insulator and the more jackets added, the higher the amount of trapped air, and so the heat won't be transferred from the calorimeter as quickly. ...read more.

Conclusion

Preliminary Experiment Possible time (secs) 0 layers 1 layer 2 layers 3 layers 0 83 78 75 85 30 83 76 73 83 1 min 81 74 73 82 1:30 80 75 72 81 2 mins 79 73 71 79 2:30 78 73 70 78 3 mins 72 71 70 78 Possible time (min) 0 layers 1 layer 2 layers 3 layers 0 87 78 75 83 1 81 74 73 82 2 84 73 71 79 3 83 71 70 78 4 82 69 70 76 5 80 68 67 74 6 78 66 66 74 For our final experiment, I will use the time span of 1 minute, as it seems more accurate and it allows time for convection and conduction to take place sufficiently. ...read more.

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