Some of the solar energy that reaches the Earth is captured by plants that use this energy to convert carbon dioxide and water into organic compounds that contain chemical potential energy. The boy, like all other animals, eats foods that come from plants or from other animals that eat plants. In his body the organic compounds are broken down and the released chemical energy is captured and stored in small energy-rich molecules. When the boy kicks the ball, potential energy stored in these molecules is converted to kinetic energy of his movement. As his moving foot hits the soccer ball, some of the kinetic energy is transferred to the ball and makes it move. Eventually the ball stops moving, as its kinetic energy is dissipated as heat in the environment.