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In this experiment I will be investigating and comparing the temperature of a single animal, and an animal huddled into a pack. I will be recording the temperature of the animal in the middle.

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Introduction

Plan. In this experiment I will be investigating and comparing the temperature of a single animal, and an animal huddled into a pack. I will be recording the temperature of the animal in the middle. These animals will be symbolised as test tubes. Animals need to stay warm because enzymes work best at 37 degrees Celsius. If the enzymes do not work, the animal will die of hypothermia. Safety Be careful with hot water and test tubes. Preliminary Work Time in seconds 1 Test tube surrounded by 0 1 Test tube surrounded by 2 1 Test tube surrounded by 4 1 Test tube surrounded by 6 1 Test tube surrounded by 8 1 Test tube surrounded by 10 Starting temp 60 60 60 60 60 60 60secs 55 56 57 58 59 60 120secs 50 52 54 56 58 59 180secs 45 48 51 54 57 58 240secs 40 46 48 52 56 57 300secs 35 42 45 50 55 56 Prediction When I change the amount of animals I think the temperature of the centre animal is going to rise. ...read more.

Middle

The size of the animals determines how many animals are needed to keep the animal(s) in the middle at 37 degrees Celsius that is the temperature that enzymes work best at. Coating (fur etc). The amount of insulation depends on keeping it warm. This is why animals in cold countries e.g. polar bears have very thick insulation, this is to keep it warm. Sort of like a tea cosy on a teapot. The outside temp is a factor, which very much makes a difference in this investigation; this factor when doing the experiment will have to be kept fair. I will be changing . . . The amount of animals. I have opted for this because it works best with my experiment and the apparatus that I will be using. In order to do this successfully I will start with one animal first as represented by a test tube. Then I will surround this one by 2, 4, 6, 8, 10 animals to make a realistic and varied experiment. I will measure/observe & compare . . . The temperature of the first number one animal in degrees C. ...read more.

Conclusion

Results Time in seconds 1 Test tube surrounded by 0 1 Test tube surrounded by 2 1 Test tube surrounded by 4 1 Test tube surrounded by 6 1 Test tube surrounded by 8 1 Test tube surrounded by 10 Starting temp 60 60 60 60 60 60 60secs 55 55 59 59 59 60 120secs 51 51 58 58 58 59 180secs 48 48 56 57 57 58 240secs 45 46 55 56 56 57 300secs 42 45 53 55 56 57 Analysis The graph below shows the accuracy and inaccuracy of my results. I have discovered that the more test tubes which surround the centre test tube the less heat that is given off and so forth the animal stays warmer in the huddle. Evaluation The experiment went well but looking at my graph, some results seem to be out of place and could be improved upon too make them more accurate and useful. Things that could have went wrong include, timing, amount of water poured in, temperature of water. Next time I could improve the way timing was made and that the water went into the same test tubes at the same time. ...read more.

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