What is a system?
A series of stores which are connected because of flows and processes which are driven by a driver
What are inputs?
Energy/material added to a system
What are stores?
residence of material within a system for a period of time
What is a flow?
Transfer of energy or material between stores
What is an output?
transfer of material or energy out of a system
What is an open system?
Open to both inputs and outputs of energy and matter
Are system models accurate?
Partially but systems are more complex in reality
What is a closed system?
A natural physical system that does not allow transfer of matter in or out of the system