Systems In Depth 1.2

Question 1

What is a closed system?

Answer 1

Exchanges energy with surroundings but not matter > does not exist in pure forms in nature, the Earth is considered to be one

Question 2

What is an isolated system?

Answer 2

Nothing goes in or out, neither mass nor energy > does not exist naturally

Question 3

Boundaries of a system

Answer 3

Physical systems with physical boundaries, sharp such as a coastline from ocean/shore

Transitional such as gradual change in vegetation

Question 4

Three components of a system

Answer 4

Storages of matter/energy
Flows (inputs/outputs)
Processes transforming matter/energy > photosynthesis

Question 5

Inputs

Answer 5

Import of material and energy across the system boundary

Arrows in

Question 6

Outputs

Answer 6

Export of materials and energy across the system boundary

Arrows out

Question 7

Flows

Answer 7

Flow and pathways (fluxes) within the system along wig ugh the energy and material pass

Question 8

Stores

Answer 8

Storage area within the system where energy and material is stored for varying lengths of time before being released into flows
A box

Question 9

How is the size of flows depicted?

Answer 9

Size of arrows are representative of the size of the flow if it is know.

Question 10

What is an open system?

Answer 10

Exchanges both energy and matter with surroundings > natural systems