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RESULTS & GRAPH for the investigation of the Cooling Rate of Water RESULTS Temperature(ºC) RAW-expt1,2(Processed-average) Volume of Water Suface Area/Volume(higher or lower than previous) Start Temp End Temp Drop in Temp Time Taken(mins) Cooling Rate(ºC/s) 10 53 37,38(37.5) 16,15(15.5) 5 3.1 15 Lower 53 41,42(41.5) 12,11(11.5) 5 2.3 20 Lower 53 40,38(39) 13,11(12) 5 2.4 25 Lower 53 46,46(46) 7,7(7) 5 1.4 30 Lower 53 46,48(47) 7,5(6) 5 1.2 35 Lower 53 47,48(47.5) 6,5(5.5) 5 1.1 40 Lower 53 47,49(48) 6,4(5) 5 1 ANALYSIS & EVALUATION Analysis From the results and graph it can be seen that as the volume of the water increases the drop in temperature decreases in 5mins so the cooling rate decreases. The graph is showing a line decreasing and at a decreasing rate, as it starts off quickly decreasing then slowing down. As shown by the line not being straight it isn't linear graph, and neither is it linear. This supports my prediction of the volume increasing while the cooling rate decreases, and I think this because there are more particles in more volume so it will take longer for more particles to lose heat than less particles. And hen this heat is given to the environment as...

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