Energy from the sun.

The ratio of the useful energy delivered by a dynamic system to the energy supplied to it.

All of the following are considered renewable energy sources EXCEPT –

Energy derived from wind by means of windmills or wind turbines.

Device that combines hydrogen and oxygen and produces electricity in the process

Plant materials and animal waste used especially as a source of fuel.

A person or household that purchases goods or services.

A contaminant to the environment, especially human-made waste.

The process of making new products from materials that were used in another product.

Energy stored in the earth in the form of heat.

To decrease the amount of products purchased or produced with the intent of minimizing waste

The use of flowing water from waterfalls and dams to produce electricity.

Energy stored in the nucleus of an atom.

A natural fuel (coal, oil, or gas) formed in the geological past from the remains of living organisms.

Any significant change in measures of climate, such as temperature lasting for an extended period of a decade or longer.

Items that can easily degrade by natural processes

Fossil Fuels (choose ALL that apply)

The fossil fuel that most likely provides the electricity for your tablets is _____.

The solid form of fossil fuels is _______.

All of the following are considered alternative energy sources EXCEPT –