There are many ways that this has direct relevance to Technology and Metals Aluminum and copper are both common metals used in the pots and pans we use to cook. We see that the heat capacity of copper is very low. That means that relatively little heat is needed to raise the temperature of copper, i.e. it heats up very fast. That is why some pots have copper bottoms, it helps to heat the pot up more quickly and evenly. Aluminum pans heat up a little more slowly, but retain more heat.
Water heats up much more slowly than either metal, but retains much more heat.
Modern technology uses the large amount of heat that can be transferred from water as a source of energy, e.g. in heat pumps. Geothermal energy also relies on heat transfer. In that case air or water on the earth's surface exchanges heat with cold deep ocean waters of cool deep earth. This site shows how heat pumps work and lists some schools that use heat pumps for energy. Using the graduated cylinder, measure 50 ml of water into two stacked Styrofoam cups, which are placed in a 150 ml beaker for extra stability.