IB ESS Topic 1.2 - Systems and models
System - correct answer ✔✔A set of inter-related parts working together to make a complex whole
Open system - correct answer ✔✔Exchanges matter and energy with its surroundings
Closed system - correct answer ✔✔Exchanges energy but not matter with its surroundings
Isolated system - correct answer ✔✔Exchanges neither matter nor energy with its surroundings
Transfer - correct answer ✔✔Occurs when energy or matter flows and changes location but does not
change its state
Transformation - correct answer ✔✔Occurs when energy or matter flows and changes its state - a
change in the chemical nature, a change in state or a change in energy
Systems approach - correct answer ✔✔A way of visualizing a complex set of interactions which may be
ecological or societal
Model - correct answer ✔✔A simplified version of reality that can be used to understand how a system
works and predict how it will respond to change
Stock - correct answer ✔✔Where the material or energy is stored
(box)
Flow - correct answer ✔✔Where the material or energy is moving from one place to another (arrows)
Processes - correct answer ✔✔The things that are happening in the system
System - correct answer ✔✔A set of inter-related parts working together to make a complex whole
Open system - correct answer ✔✔Exchanges matter and energy with its surroundings
Closed system - correct answer ✔✔Exchanges energy but not matter with its surroundings
Isolated system - correct answer ✔✔Exchanges neither matter nor energy with its surroundings
Transfer - correct answer ✔✔Occurs when energy or matter flows and changes location but does not
change its state
Transformation - correct answer ✔✔Occurs when energy or matter flows and changes its state - a
change in the chemical nature, a change in state or a change in energy
Systems approach - correct answer ✔✔A way of visualizing a complex set of interactions which may be
ecological or societal
Model - correct answer ✔✔A simplified version of reality that can be used to understand how a system
works and predict how it will respond to change
Stock - correct answer ✔✔Where the material or energy is stored
(box)
Flow - correct answer ✔✔Where the material or energy is moving from one place to another (arrows)
Processes - correct answer ✔✔The things that are happening in the system
