This 11" x 17" poster makes a great handout for classes as it touches on several principles covering a wide variety of science-related topics.
The primary focus is on the very promising technology behind hydrogen fuel cells and their use in automobiles. The poster/handout visually depicts how hydrogen fuel cells generate power and how that power is then transferred to the vehicle itself with a step-by-step process that is color coded based on the kind of energy being used at each point.
Additionally, the poster/handout also uses diagrams to depict how vehicles using internal combustion engines and battery power work as compared to hydrogen fuel cell vehicles.
The poster/handout also briefly discusses the kinds of energy (chemical, electrical, thermal and mechanical) used to power these processes and ultimately the vehicles themselves.
This poster/handout may be useful for class discussions related to all the core scientific principles mentioned above, as well as general technology and climate-change-related subject matter.