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Investigating Heat Loss In Animals.

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Introduction

Investigating Heat Loss in Animals. Aim: My aim is to, investigate how the body size of an animal affects the rate of heat loss. Prediction: I predict that as the smaller the animal/tube the longer it will take for the heat to be lost. This is because there is a larger SURFACE AREA; therefore it will have a smaller VOLUME and thus take longer for the heat to escape. Plan: I am going to be using four test tubes, which represent four animals. All of the test tubes will be different sizes to show the different size in animals. I will heat water to 37o as this is the normal temperature of a body and I will place the water in each test tube, I will be taking temperature readings every minute for ten minutes. ...read more.

Middle

Temp (oC) 1 Temp (oC) 2 0 37 37 1 36 36 2 34 34 3 31 33 4 31 31 5 30 30 6 28 30 7 28 30 8 28 29 9 27 29 10 27 29 Centrifuge tube: Time (min) Temp (oC) 1 Temp (oC) 2 0 37 37 1 36 34 2 35 33 3 32 32 4 31 31 5 31 31 6 31 29 7 29 29 8 29 28 9 28 28 10 26 28 Ignition tube: Time (min) Temp (oC) 1 Temp (oC) 2 0 37 37 1 34 34 2 32 30 3 31 29 4 29 29 5 29 27 6 28 26 7 28 26 8 26 26 9 26 25 10 25 25 Average Results: Time (minutes) ...read more.

Conclusion

Evaluation: Overall I came up with the results I expected to come up with, but this investigation could be improved by: Repeating it over and over to get ACCURATE results, Using different sizes of tubes, By investigating other factors that affect heat loss. I tried to keep the investigation a fair test but, I had to round the measurements up to the nearest mm or cm, the temperature readings have been read to the nearest integer; therefore not accurate. My graph shows proves my prediction as the VOLUME decreases the time taken for the heat to be lost does as well decrease. Again I could have done this investigatio several times to get morea ccurate results to find out WHAT affects the actual HEAT LOSS and I could also investigate different factors. Nadia Razzaq 11Y ...read more.

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