IB ESS 1.2

A systems approach is...

a way of visualizing a complex set of interactions which may be ecological or societal

A system is comprised of...

storages and flows

transfers

a change in location

transformations

a change in the chemical nature, a change in state or a change in energy

In system diagrams, ________ are usually represented as rectangular boxes and _____ as arrows.

storages, flows

An open system...

exchanges both energy and matter across its boundary while a closed system exchanges only energy across its boundary

An isolated system...

is a hypothetical concept in which neither energy nor matter is exchanged across the boundary

Ecosystems are...

open systems

A model is...

a simplified version of reality and can be used to understand how a system works and to predict how it will respond to change