Energy Flashcards, test questions and answers
Discover flashcards, test exam answers, and assignments to help you learn more about Energy and other subjects. Don’t miss the chance to use them for more effective college education. Use our database of questions and answers on Energy and get quick solutions for your test.
What is Energy?
for meEnergy is a term used to describe the capacity of a physical system to do work. It is an important concept in many areas of science, from physics and engineering to ecology and economics. Energy exists in various forms, such as thermal energy, electrical energy, chemical energy, nuclear energy, gravitational energy and kinetic energy. All these forms of energy can be converted into one another with varying levels of efficiency.Thermal energy is the transfer of heat between two objects or bodies at different temperatures. Thermal radiation is another form of thermal energy which is emitted by hot objects as infrared radiation. Electrical energy is produced when electrons flow through a conductor such as a wire or battery. Chemical reactions can also produce electrical currents when certain substances are combined together or react with one another. Nuclear power plants use nuclear fission reactions to generate electricity while solar panels convert light from the sun into electricity via photovoltaic cells. Gravitational potential energy (GPE) is the potential for stored kinetic or mechanical work that can be released under certain conditions due to the force of gravity acting upon it; an example would be water stored behind a dam before being released downriver for use in hydroelectric power generation systems. Kinetic energy (KE) refers to an object’s ability to do work due to its motion; this could include anything from wind turbines harnessing wind power for electricity production or a baseball flying through the air after being thrown by hand towards its target on a playing field. The most important part about understanding how each type of Energy works and interacts with each other lies in understanding how they are converted into one another so they can be used efficiently in our lives today.