More on Energy

Energy can be readily converted between forms. For example, a book that falls from a shelf converts potential energy into kinetic energy. When a person moves the book back to the shelf, they convert kinetic energy into potential energy. The metabolism of life involves countless interactions between matter and energy and countless conversions between energy forms, so it is important to understand the distinction between matter and energy. Watch this video, which offers an overview of the concept of energy and discusses how it relates to atoms and molecules. All atoms and molecules have kinetic energy or the potential for movement. We measure kinetic energy as temperature.