conservation of energy
Energy can never be created or destroyed - only transferred from one thing to another. Energy is only useful when it is transferred from one thing to another but some energy can be lost during transition
Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal and natural gas -- and renewable sources like wind, solar, geothermal and hydropower. These primary sources are converted to electricity, a secondary energy source, which flows through power lines and other transmission infrastructure to your home and business.
Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat
Nuclear energy is the energy in the nucleus, or core, of an atom. Atoms are tiny units that make up all matter in the universe. Energy is what holds the nucleus together. There is a huge amount of power in an atoms dense nucleus.
kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes
Fossil energy is the use of decayed animal and human product which is turned in to crude oil, gas, petrol, diesel and grease.
magnetic energy in magnets and electromagnets
Kinetic The energy in moving objects. Also called movement energy.
Heat Burning match Also called thermal energy
Light Sunlight Also called radiant energy
Gravitational potential sky divers in freefall under gravity
Chemical Organic food Stored energy in fuel, foods and batteries
Sound Guitar Energy released by vibrating objects
Electrical Lightning Energy in moving or static electric charges
Elastic potential catapult stores elastic energy Stored energy in stretched or squashed objects