PHYSICS.....

COOLING CURVES OF WATER and HEAT TRAVELS Laboratory Activity No. 4 Experimental Description Two identical beakers with exactly the same amount of warm water were prepared. The first beaker was allowed to cool by sitting in a classroom with an air temperature of 23 " C. The second beaker was placed in a large bucket of ice water at OCC. The temperature of each was measured every minute for 45 minutes. The data are shown below. -t- Beaker of water in air at23"C - Beaker of water in ice water at("C 70 water temperature (C) 0 5 10 15 20 25 30 35 40 45 time (minutes) Use this graph to answer the following questions. 1) Which beaker of water starts off at higher temperature? 2) Which beaker of water ends up at higher temperature? 3) Which beaker of water had a larger temperature drop overall? 4) After 10 minutes, what are the temperatures of the two beakers of water