Using concept sketches, learners study energy requirements of food production explain why different sources of food require different inputs of energy. They also investigate how variables like farming methods, processing methods and...

In the following interactive students will begin to explain the human body's consumption of energy when at rest vs. when engaged in activities that do useful work. They will also calculate the conversion of chemical energy in food into...

A series of useful calculators for converting different sources of energy from one energy unit to another. Find conversion calculators for coal, electricity, natural gas, crude oil, gasoline, and diesel fuel, along with an additional...