What type of energy source comes from radioactive minerals such as uranium and releases energy when the atoms of the radioactive minerals are split by nuclear fission? 

What is the name given to the source of energy created with the burning of decaying plant or animal waste? 

What type of energy source is formed from fossiled plants and is found sandwiched between other types of rock in the Earth? 

Which of these energy sources listed is NOT a renewable source of energy? 

Energy resources that, once used, cannot be replaced are called: 

Energy resources that, once used, can replenish themselves and can be used again and again are called: