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To investigate the relationship between surface area : volume ratio and heat loss.

INTRODUCTION:

The aim of this experiment is to investigate and find the relationship between heat loss (of water) and surface area to volume ratio of animals. To investigate this, we are going to use three flasks of different volume (as the equivalent the animals) and thus different surface areas filled with water.

BACKGROUND:

Surface Area : Volume Ratios

We will be using the following formula for calculating SA:Vol ratios:

SA : Vol

Vol : Vol

100ml flask = 115 : 100 = 1.15 : 1

100 : 100

250ml flask = 230 : 250 = 0.92 : 1

250 : 250

500ml flask = 330 : 500 = 0.66:1

500 : 500

The factors effecting heat loss:

1.Energy Levels

2.Climate / air
*…show more content…*

The second and third experiment was also accurate, however the line of best fit does not go through all the points, in the evaluation section I can explain why this could be.

On the graphs I have plotted the basic formula of a linear line of y = mx + c. As we can see the gradient for the 100ml flask at 0.97 was fractionally (0.01 out) more than double that of the 500ml flask at 0.48 which proves to us the prediction was correct. So as a statement we can say: Heat loss occurs at twice the speed for the 100ml flask than the 500ml flask due to the fact that the gradient of the line of best fit for the 100ml flask is double that of the 500ml flask. Also we can see that the 250ml flask lost it 's waters heat at somewhere between that of the 100ml and 500ml flask, proving my prediction correct.

From the results I can say that, SA to volume ratio does affect the rate of heat loss.

Evaluation of Results:

I thought that most of my results were very accurate. However there were a number of points out of place that I could improve on. On the '250ml experiment ' the reading between six and eight minutes appeared to be incorrect compared with the average heat loss in the same experiment. This could have been

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