Heat Energy Investigation :: Papers

Heat Energy Investigation In this experiment we will as accurately as possible measure the voltage, current, time, start temperature, final temperature and the mass of 7 different substances. We will measure the voltage to make the experiment more accurate, we will do this by making sure that every time we do an experiment we will keep the volts to 12v and nothing else, as this could affect the overall result. It is also needed as part of an equation that will be done later on. We will measure the time, start temperature and final temperature because we again need it as part of an equation, which will help us to find out how much energy was needed to make the substance rise by 1o. We need to know the mass of the substance to make it a fair test and as part of the equation. We intend to safely heat up seven different substances; these are steel, oil, water, brass, aluminium, sand and copper. They will be heated to a final temperature of 50oc. We will then do some equation to find out how much energy is needed to make each substance go up by 1o. I predict that the oil and water which are both liquids will take more energy to heat up than the solids. Because the bonds in the liquids are free flowing and therefore when the substances are heated there is a smaller knock on effect than in the solid substances. By using class results as well as our own we will be able to get a good set of results and will also be able to find out how accurate our own results were. To make the results as accurate as is possible we will not let the metals get too hot and with the liquids we shall stir it so that there is an even temperature throughout. Once we have our measurements: E.g. Steel Voltage = 12v Current = 3.57A Time = 5m 10 sec (310 sec)