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To find out whether a beaker with a larger surface area cools quicker than one with a smaller surface area.

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Introduction

8th April 03 Physics coursework Planning We are investigating heat loss from a container and how it is affected. We could change: Room temperature Surface area Amount of water Use a lid Insulate around it Colour of tin We could measure / observe: Amount of time Temperature We will change: Surface area We will measure / observe: Temperature (every minute for 5 minutes) Our question is: Does surface area effect the rate of heat loss? We will keep these the same: Colour of tin Room temperature Amount of water Use a lid Insulate around it Preliminary investigation Plan 1. Collect 4 different sized beakers 2. ...read more.

Middle

we will do all the experiments at the same time in the same room Lid - we will not use lids on any of our beakers Variables We will measure 100ml boiling water into each beaker. The variable we will change is the surface area. Findings of preliminary work In our main experiment we will make sure we label each beaker and measure the surface area of each beaker Prediction I think the beaker with the largest surface are will cool quicker because there is more surface exposed to the air which will make it cool faster. The beaker with the smallest surface area will cool the slowest because there is less of the surface exposed to the air which would cool it faster. ...read more.

Conclusion

The bigger the surface area the bigger the drop in temperature. This proves our prediction was correct. There is a clear pattern in our results as the temperature decrease is steady and there are no inaccurate results. Evaluation The method we used was good as it was simple and we did not get any of the beakers mixed up. If we had planned the experiment better we would have measured the temperature every 2 minutes for 10 minutes rather than every minute for only 5 minutes this would have hopefully given more accurate results. Another way we could have got more accurate results is to do the experiment again to compare the results. ...read more.

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