WorksheetsPAE(03/19/25): Real-Life Close and Open Technology System
Total questions: 20
Worksheet time: 10mins
Which of the following best explains an open system?
A system that does not exchange energy or matter with its surroundings
A system that only receives inputs but does not produce outputs
A system that exchanges energy, matter, or information with its environment
A system that does not require external interaction
Why is a mobile phone considered an open system?
It stores all energy internally
It receives inputs and produces outputs that interact with the environment
It does not require external power
It operates without exchanging signals
Describe how a closed system functions.
It continuously interacts with the environment
It allows the flow of only information but not matter
It is self-contained and does not exchange matter with its surroundings
It requires external materials to function
Which of the following is an example of an open system?
A home water heater
A sealed thermos bottle
A jet engine
A battery
Why is a jet engine an open system?
It does not use energy
It takes in air, combusts fuel, and expels exhaust
It stores heat without releasing it
It operates in a vacuum
Explain why a car’s air conditioning system is a closed system.
It continuously interacts with the environment
It recirculates refrigerant within a sealed loop
It takes in external air to function
It burns fuel to produce cold air
Which of the following best describes a faucet?
An open system because it takes in and releases water
A closed system because it stores water
A system that does not require external interaction
A sealed system that recirculates water
Why does a manufacturing conveyor belt qualify as an open system?
It cycles coolant within machinery
It moves materials in and out of the factory process
It remains in a sealed environment
It does not interact with external objects
Explain how a sealed industrial cooling system functions.
It releases coolant into the environment
It continuously recycles coolant without external exchange
It takes in materials and expels waste
It does not use energy
Which of the following is NOT a characteristic of an open system?
It exchanges energy with its surroundings
It allows material to enter and exit
It operates without external influence
It interacts with its environment
Which statement best describes why a faucet is an open system?
It recirculates water internally
It allows water to flow in and out from an external source
It does not interact with its environment
It uses only stored water
Explain how a home water heater differs from a faucet.
A water heater recirculates heated water without external exchange
A water heater continuously drains water
A faucet only stores water internally
A faucet does not use external sources
Why is a conveyor belt used in manufacturing an open system?
It moves materials in and out of a factory process
It does not interact with external components
It circulates materials without release
It does not require an external power source
Which of the following best describes a sealed industrial cooling system?
It cycles coolant within machinery without external loss
It continuously takes in and releases coolant
It does not require cooling fluids
It operates without using energy
Describe how a mobile phone processes information.
It only receives inputs but does not produce outputs
It converts inputs (touch, voice) into outputs (sound, display)
Which system best represents a closed system in transportation?
A jet engine taking in air and expelling exhaust
A car’s air conditioning system recirculating refrigerant
A faucet delivering water from an external supply
A conveyor belt moving items through a factory
Why do cooling systems in industrial settings function as closed systems?
They constantly take in fresh coolant
They do not allow coolant to leave the system
They exchange heat and matter with the environment
They burn fuel for energy
Explain how an open system affects its surroundings.
It exchanges energy, matter, or information with its environment
It keeps all matter sealed inside
It does not interact with the external world
It prevents outputs from leaving
Which of the following is NOT an input for a mobile phone?
Touch on the screen
Voice into the microphone
Sound from the speaker
Electrical power
Why is an air conditioning unit in a house considered a closed system?
It does not need an energy source
It continuously exchanges air with the outside
It recirculates refrigerant within a closed loop
It does not cool the air inside
