Energy is essential for various activities like warming the planet, lighting homes, and powering vehicles. The total energy remains constant, following the law of conservation of energy.
Energy can neither be created nor destroyed but can be converted from one form to another. For instance, charging a phone involves transferring electrical energy to the phone battery.
Potential energy is stored energy, while kinetic energy is the energy of motion. Examples include a falling ball (potential to kinetic) and a roller coaster ride.
Wind Turbines
Wind turbines convert the kinetic energy of wind into mechanical energy, which is then transformed into electrical energy for household use.
Chemical energy in food and fuels is converted into mechanical energy for movement and heat energy for maintaining body temperature. Batteries convert chemical energy into electrical, light, or sound energy.
Various devices transform electrical energy into other forms—fans (kinetic), bulbs (light), and toasters (heat). Learn more about energy transformations and other science topics at eTutorWorld.com!