Non-renewable energy means the energy source will eventually run out. Most of the non-renewable energy sources belong to the fossil fuel category. Coal, natural gas, crude oil and liquid petroleum gas are examples of non... More »

Renewable energy sources are sources of energy that are theoretically inexhaustible and not derived from fossil fuels or nuclear sources. Examples of renewable energy sources are wind, the sun, water, geothermal and biom... More »

Fossil fuels are non-renewable because they take millions of years to form. Fossil fuels make up most sources of non-renewable energy, and they were created millions of years ago as a result of marine creatures decaying ... More »

A sound source of high energy emits waves, just like any other source of energy. Waves are defined only by their frequency and wavelength. High frequency means high energy and short wavelength means high energy. Sound ha... More » Science Physics Electricity

Convection is the heat transfer due to the motion of a fluid, such as a gas or liquid, that carries heat energy away from a heat source. Conduction instead occurs between materials in contact with each other without any ... More »

According to an experiment reported at Exploratorium, a pickle can be used as an energy source to power small devices such as a light bulb or buzzer because of its ability to push and pull electrons. The pickle is high i... More »

Wind energy is a form of renewable energy produced through machines that use wind as their power source. Wind energy is only possible because of the sun. More »