The student has identified a focused topic and a relevant research question, both of which are clearly stated in the introduction. The physics behind the topic is explained well, and the methodology is clear and easy to follow. The student has also taken steps to assure the relevance and reliability of the collected data and shows full awareness of safety hazards and environmental issues associated with the experiment. However, the student incorrectly identifies the independent and dependent variables to pursue the research question. There were no relevant ethical issues associated with the experiment.