unit test energy
elastic energy
Elastic Energy Elastic energy is the potential mechanical energy stored in an object when work is performed to change its shape. You can observe this energy when you stretch a rubber band or squeeze a spring.
electrical energy
Electrical Energy Electrical energy is the kinetic energy of moving electric charges. The electrical energy that powers a toaster oven or the light bulb in a lamp is caused by negatively charged particles moving in a wire. The more electric charges that are moving, the more electrical energy is carried by the wire. Electrical energy can occur in nature in the form of lightning and smaller static electricity shocks.
electromagnetic energy
Electromagnetic Energy Electromagnetic energy is the kinetic energy of electromagnetic waves, which include visible light, x-rays, and microwaves. X-rays are high-energy waves used by doctors and dentists to look at your bones. Microwaves can be used to cook food or to transmit cellphone calls.
mechanical energy
Mechanical Energy The mechanical energy of an object is the sum of the object's kinetic energy and potential energy. In other words, mechanical energy is the energy of an object due to its motion and its position. A ball that flies through the air has mechanical energy because it has both kinetic energy and gravitational potential energy. An object's mechanical energy can be all potential energy, all kinetic energy, or a combination of potential and kinetic energy.
nuclear energy
Nuclear Energy Nuclear energy is the potential energy stored in the nucleus of an atom. When an atom's nucleus breaks apart or when the nuclei of two small atoms join together, energy is released. The energy given off by the sun comes from nuclear energy. The sun's light and heat come from these reactions. Without nuclear energy from the sun, life would not exist on Earth.
sound energy
Sound Energy Sound energy is kinetic energy caused by the vibration of particles in a medium, such as steel, water, or air. When you pluck the strings of a guitar, they vibrate, producing sound. These vibrations travel outward from the guitar, and transfer energy to air around the strings. As the particles of the air vibrate, they transfer the sound energy to other particles. The vibrating particles do work on special structures in your ear that allow you to interpret the vibrations as sound.
thermal energy
Thermal Energy Thermal energy is the total kinetic energy of all the particles that make up an object. Particles move faster at higher temperatures than at lower temperatures. The faster the particles in an object move, the more thermal energy the object has. Also, the more particles an object has, the more thermal energy it has.
kentic energy
This energy of motion is called kinetic energy
potential energy
An object may also have stored energy based on its relative position within a system or its condition, known as potential energy
chemical energy
Chemical Energy Chemical energy is the potential energy stored in the chemical bonds of substances. The chemical energy in a compound depends on the position and arrangement of the atoms in the compound. Sources of chemical energy include batteries, fuels, and matches. The foods you eat also contain chemical energy.