What is Energy?

Energy is the ability to do work. Two states of energy are kinetic energy and potential energy. Kinetic energy is energy of motion. Some examples of this would be electrical energy, radiant energy, thermal energy, motion energy, and sound energy. Potential energy is stored energy. Some examples of potential energy are chemical energy, stored mechanical energy, nuclear energy, and gravitational energy. Radiant energy can either be visible or invisible to the human eye. An example of radiant energy could be the sun's rays hitting Earth. Radiant energy is also known as solar energy. Gravitiational energy is energy that exists between two or more masses. An example of this could be an object falling off a high cliff or mountain. While studying the different forms of enegy, I learned that everything around us uses energy to work. This topic was interesting to learn about and I hope to learn more.