In our science investigation last week we looked at different ways heat moves, or the way heat transfers between substances having different temperatures. In the first experiment, we used food coloring to demonstrate how the kinetic energy of the molecules in the warmer water is greater than the kinetic energy of the molecules in the cold water. By coloring the water having different temperatures, we were able to compare how fast the dye spread throughout each beaker. This demonstrated that in warmer water molecules move faster than in cooler water. Therefore, this illustrated that warm water contain more heat than the cold water.In the second experiment, using the scientific method we designed an experiment to demonstrate heat conduction. Using two water containing vessels of different size, such as the old cans above, we placed the small can, containing ice water, inside the bigger can containing hot water. Students had measured and recorded temperature readings every two minutes, and those were plotted versus time on a graph. The results showed that over time the temperature of the water in the cold can had risen, while the temperature of the water in the hot can had fallen. Eventually the two reached an equilibrium temerature. From this, we concluded that heat moves from hot objects to cold ones.
