Practice AP Environmental Science questions on hydrogen fuel cells, carbon dioxide, energy inputs, technology costs, and environmental impact.
Which of the following accurately describes a fuel cell vehicle?
Fuel cell vehicles run on both an internal combustion engine and a backup battery.
Fuel cell vehicles are able to convert waste oil from the food industry into ethanol, which is burned as a source of power.
Fuel cell vehicles use hydrogen to generate electricity that runs the motor.
Fuel cell vehicles generate energy by creating a flow of electrons in a semiconducting material such as silicon.
Fuel cell vehicles use methane to heat water, which creates steam that turns a turbine to generate electricity.
The diagram shows the movement of one adult manatee over a 12 -hour period across an active shipping channel during the winter. Manatees are large, aquatic, herbivorous mammals that primarily eat seagrass. Manatees can travel several miles to graze. Manatees mature slowly, have low biotic potential, and inhabit warm coastal waters. They cannot survive in water below 20°C for extended periods of time.
\section*{Satellite Track and Water Temperature Log of the Movement of One Adult Manatee Over a 12-Hour Period}
Key Urban land Bay water Seagrass beds
Water Temperature - 13-19°C □ 20-23°C
Describe a potential disadvantage of using hydrogen fuel cells to power automobiles.
Begin your response to this question at the top of a new page in the separate Free Response booklet and fill in the appropriate circle at the top of each page to indicate the question number.