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I am trying to find out if sweating helps the body to cool down.

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Introduction

Biology Coursework - Sweating Aim I am trying to find out if sweating helps the body to cool down. I am going to use 2 boiling tubes to represent the human body. I will wrap them in paper towels but one of the paper towels will be wet. These will represent human skin. The wet paper towel will represent skin sweating and the dry paper towel will represent dry skin. I will put hot water in them both and this will represent blood. I will then see which boiling tube cools down the fastest. Prediction I predict that the boiling tube which is wrapped in the wet paper towel will down quicker. This is because in the human body when you get hot you lose heat through your skin, this cools you down. This process is sped up by sweating. It is sped up because the heat goes into the sweat and then it is evaporated, so the heat gets away from the body quicker. ...read more.

Middle

I will immediately start the stop clocks as all the water has been poured into the boiling tube. Then every 30 seconds I will take a reading of the temperature. When then temperature stops decreasing I will pour away the water. I will do all this again but for the boiling tube wrapped in the dry paper towel. When the temperature stops decreasing for this boiling tube I will repeat the whole experiment again and work out the averages. Diagrams Results Set 1 Temperature (�C) Boiling tube wrapped in Boiling tube wrapped in Time (S) a dry paper towel a wet paper towel 30 53 50 60 49.5 46 90 49 45.5 120 49 43.5 150 48.5 40.5 180 47 40 210 46 39.5 240 45 39.5 Set 2 Temperature (�C) Boiling tube wrapped in Boiling tube wrapped in Time (S) a dry paper towel a wet paper towel 30 54 51.5 60 53 49 90 52 47.5 120 51 45 150 50.5 44.5 180 50 43 210 49.5 41.5 240 48.5 40 Averages Temperature (�C) ...read more.

Conclusion

I could have stopped this by putting the lid of the water bath back on. This would have stopped heat loss and the starting temperature would have been the same every time. The amount of water used from the water bath could have been more accurate by using a volumetric pipette this would have measured out exactly the right amount of water. I could also take the temperature more accurately and at exactly every 30 seconds. To do this I could use and electronic thermometer I don't think that I would have changed my method I would just have used different apparatus which I have mentioned above to make my experiment more accurate. I don't think that any of my results where very inaccurate because they all follow the same general patter as time increases the temperature decreases. But they could have been more accurate as I have stated above. I think that my results are accurate enough to make a good conclusion because my test was very fair I did the entire thing I stated in my plan although they could have been improved to make my experiment more fair and accurate. Paul Gallagher 11HY ...read more.

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