g4 vocab review

Front

Electricity from moving water

Back

hydroelectricity

Front

Energy from deep within Earth

Back

geothermal energy

Front

Power from the sun for electricity

Back

solar energy

Front

Fuel from living material

Back

biofuel

Front

Source of energy besides fossil fuels

Back

alternative energy source

Front

A material replaced quickly in nature.

Back

renewable resource

Front

A source of energy from ancient remains.

Back

fossil fuel

Front

Natural materials or energy sources useful to people that are not easily replaced

Back

nonrenewable resource

Front

Valuable natural element.

Back

natural resource

Front

Saving, protecting, or using resources wisely.

Back

conservation