2.3.1 Project: Modeling the Energy of a System Project Physical Science Sem 1 Name Date Develop and Use Models to Show the Energy of a System In this project, you will choose a system in which energy changes occur. Then you will develop and use two models, based on evidence, that illustrate the energy in that system. One of your models must be a potential-energy diagram. At least one of your models must show that a system's total energy is a combination of the energy associated with the motions of its particles and the energy associated with those particles' relative positions. Your models should also show any transformations of energy taking place in your system - for example, the transformation of potential energy to kinetic energy or of kinetic energy to thermal energy. In addition, your models should describe any flow of energy into or out of the system. Background Consider a puddle of water and melting ice on a table. These objects make up a system - a collection of objects that interact with one another. The energy in these objects is also part of the system. Everything outside the system is called its surroundings. In this case, the air around the table and the ground under it are considered parts of the surroundings Energy can be transferred between objects in a system. Forms of energy may include kinetic energy, potential energy, and thermal energy. In addition, some objects in a system may transform energy - for example, by transforming potential energy into kinetic energy or kinetic energy into thermal energy. If matter and energy cannot be