Sources of Energy

What is energy? Is energy important? (¿Qué es la energía? ¿Es importante?) There are two types of energy sources: renewable and non-renewable. (Hay dos tipos de fuentes de energía: renovables y no renovables). Do the following activity to know more.

Sources of energy, an interactive worksheet by jesus_abel
liveworksheets.com

Can you think of more examples for each category?