Energy TransformationsAim: To investigate energy and electricity transformations. In this lesson, we participated in four small experiments that showed energy transformations. Here are our findings: The first experiment was the spinning of a dynamo to make a light bulb activate. This demonstrated how the kinetic motion energy being input by the person turning the dynamo, transformed into electrical kinetic energy as it ran through the wires, before being released through the activated light bulb as light and thermal kinetic energy. The second experiment was to investigate how an electrical input can make a bell ring. Our findings discovered that the electrical energy, when input into the bell, transformed into motion and sound energy, which caused the bell to jump around and to produce a very loud ringing sound. Our third experiment was to measure the amount of energy (measured in joules) collected by solar panels when light energy, produced by different voltages of electrical energy, is input. We measured the amount of output energy from 2 through to 12 volts of input energy. We found that each time the amount of output energy collected increased, on average, by 23.17J. The increase in input energy corresponding with the increase of output energy, evidently showed the transformation between the electrical input energy, to the light energy, to then be collected as electrical energy. Our final experiment was to use a renewable energy kit to show energy transformations between electrical energy and, light, wind and sound energy. We used wires to connect various ports on the kit to ports on a battery to activate the fan, the LED and regular light bulb, and the fan. This demonstrated how the chemical potential energy stored within the battery transformed into electrical energy, before being output as either wind, light or sound energy. Lesson Summary:
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