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To investigate the effect of ‘huddling’ on temperature loss in a model animal

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Tony Burge 04/11/2001 Science 1 Investigation Task To investigate the effect of 'huddling' on temperature loss in a model animal Planning Penguins and other animals in cold conditions often huddle together for warmth. I am going to do an investigation to see if this method is effective. I will do this by testing the temperature of water from a test tube every minute for ten minutes and then test the temperature of the water from two test tubes in a huddle of seven, one from the middle and one from the edge. I will make the test is fair by measuring out 10cm of water in each of the test tubes by using a beaker. I will also make sure, by using a thermometer, that it's at an equal temperature at the start of the experiment. ...read more.


* The heat radiation from the test tubes in the 'huddle' will keep the temperature from dropping as fast as the lone test tube will. Results Time (minutes) Single Test tube c Inside Test tube c Outside Test tube c 0 61 61 63 1 56 57 61 2 54 58 59 3 52 57 56 4 49 56 56 5 48 55 55 6 47 53 53 7 45 51 50 8 40 50 49 9 39 49 48 10 38 48 48 Time (Minutes) Single Test tube c Inside Test tube c Outside Test tube c 0 66 65 65 1 60 64 64 2 58 63 63 3 56 62 60 4 55 61 59 5 52 60 59 6 52 59 58 7 49 57 57 8 48 56 56 9 47 54 53 10 45 52 49 The prediction, which I made before the experiment, proved to be correct in both the experiments that I carried out. ...read more.


Evaluation I felt that my results were not completely reliable due to lack of equipment. I had planned on using a Bunsen Burner to heat my water to the correct temperature but had to use a kettle, which made it hard to get an equal starting temperature. Because of this I based my conclusion for experiment 1 on how many degrees Celsius the temperature would decrease per minute. After repeating the experiment with an equal starting temperature I feel that my results are conclusive. Also, in experiment 1, there is a surprising rise in temperature that I have circled in yellow on my graph. This is probably due to my thermometer touching the side of the glass test tube. This doesn't have an effect on my final conclusion as I did a second experiment. I found that after doing my second experiment the results followed a very similar pattern and are therefore conclusive. ...read more.

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