Process:  - Coal is burned in a boiler - Steam is produced under pressure - Flows into a turbine - The turbine spins - Creates electricity.  Perturbation hypothesis: suppose there is less coal available happens, how will it affect LESS electricity being produced.  Does the supposed perturbation have an effect (direct or indirect) on the process?
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Answer: yes


Process:  - Water in the clouds becomes very cold - The cold water forms ice crystals - The ice crystals grow by absorbing surrounding water droplets - Form snowflakes - The snowflakes fall to the ground.  Perturbation hypothesis: suppose the season is summer happens, how will it affect there is more water in the clouds.  Does the supposed perturbation have an effect (direct or indirect) on the process?
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Answer: yes


Process:  - A machine called a pulverizer grinds the coal into a fine powder - The coal powder mixes with hot air, which helps the coal burn more efficiently, and the mixture moves to the furnace - The burning coal heats water in a boiler, creating steam - Steam released from the boiler powers an engine called a turbine, transforming heat energy from burning coal into mechanical energy that spins the turbine engine - The spinning turbine is used to power a generator, a machine that turns mechanical energy into electric energy - This happens when magnets inside a copper coil in the generator spin - A condenser cools the steam moving through the turbine - As the steam is condensed, it turns back into water - The water returns to the boiler, and the cycle begins again -   Perturbation hypothesis: suppose there is more public awareness happens, how will it affect more coal is pulverised.  Does the supposed perturbation have an effect (direct or indirect) on the process?
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Answer:
no