Vocabulary 6

solar cell: a device that generates an electric current from sunlight.

biomass conversion: getting energy from plant and animal materials by changing the into high-quality fuels.

nuclear fission: the splitting of s nucleus with a large mass into two nuclei with smaller masses.

chain reaction: a reaction that is kept going by products of the reaction.

nuclear fusion: the merging of nuclei with smaller masses into a nucleus with a larger mass.

hydroelectricity: the use of flowing water to generate electricity.

thermal pollution: the excess heating of the environment.