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Does Size Affect Temperature Loss

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Introduction

DOES SIZE AFFECT TEMPERATURE LOSS INTRODUCTION We are investigating to find if a small creature eg a mouse will lose heat quicker or slower than a larger creature eg a dog. To investigate this we are going to use 2 different size beakers, fill them with water from the kettle (boiled), then we will record their temperature every minute for 15 minutes and record the temperature change. To make this a fair test we are going to fill both of the beakers at the same time and record the temperatures at the same time. ...read more.

Middle

We also will work out the temperature drop and we will repeat this 3 times for each beaker. PREDICTIONS I predict that the smallest beaker will lose heat fastest because the surface area to volume ratio is higher than the big ones. DIAGRAMS TABLES TIME (MINUTES) BIG CAN'S TEMPERATURE (�C) SMALL CAN'S TEMPERATURE (�C) TEST NO TEST NO TEST NO TEST NO TEST NO TEST NO 1 2 3 1 2 3 1:00 91 89 92 87 87 89 2:00 88 87 90 78 84 85 3:00 87 85 87 76 80 83 4:00 85 82 85 74 78 79 5:00 83 80 83 72 75 75 6:00 81 78 82 69 ...read more.

Conclusion

32 AVERAGE DROP 23.6666 29.33 ANALYSIS We found that the smaller beaker loses heat faster than the large beaker because it has a larger surface area: volume ratio. This was linked to work we were doing on homeostasis in humans and animals. Small animals eg rodents are most likely to hibernate because they lose heat quickly because of their high surface area to volume ratio. EVALUATION We could have improved our experiment by recording the temperature with temperature probes linked to a computer that would have recorded the temperature more accurately and at the exact time. We also could have compared it to another group's results to make sure they were correct. ...read more.

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