Problem: -  Coal is mined out of the ground - Coal is pulverized into fine powder - The coal is mixed with hot air - The coal and hot air are blown into a boiler - The coal and hot air burn over a fire - Highly purified water is pumped through pipes in the boiler - The water turns into steam - The steam presses against turbines - The turbines spin  What might be the last step of the process?

A: Electricity is produced.


Problem: -  A dam is built in an area prone to flooding - A large amount of rain occurs - The water builds up behind the dam - The dam opens its floodgates when it starts to get full - The water flows into a river below the dam - The dam closes its gates - The dam will occasionally open its gates again to gradually release more water  What might be the last step of the process?

A: Eventually all of the floodwater will be slowly released into the river without causing any flood damage.


Problem: -  Coal is burned in a boiler - Steam is produced under pressure - Flows into a turbine - The turbine spins  What might be the last step of the process?

A: Creates electricity.


Problem: -  Blood is sent to the liver - The liver uses chemicals and proteins to treat the blood - The blood is cleaned - Energy is produced  What might be the last step of the process?

A: