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Investigate the affects of the surface area: volume ratio on the cooling of an organism.
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Surface Area to Volume Ratio Plan Question: Investigate the affects does the surface area: volume ratio on the cooling of an organism. Apparatus: * 80ml beaker * 250ml beaker * 500ml beaker * 800ml beaker * Thermometer * Kettle * Stop clock * Water Diagram: Method: 1. Collect a 80ml beaker 2. fill with 75ml of boiling water 3. place a thermometer in the beaker 4. Wait for temperature to stay constant 5. record the starting temperature 6. Time for five minutes 7. then record the temperature 8. now work out the decrease in temperature 9. repeat this three time to work out an average 10. Repeat all the above using a 250ml,500ml and 800ml size beakers 11. now work out the surface area of each beaker using the formula (c*h)+(?rē) Variables: Variables Types of variables How it is controlled Starting temperature Input Measuring the temperature, and waiting for it to settle Volume of water Input Measuring accurately with a cylinder Size of beaker Input Use the same or same size beaker each time. Rate of cooling Output Keep the surroundings the same Time allowed to cool Input Use a stop clock...
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