Systems

Question 1

What is Input and example

Answer 1

Material or energy moving into the system. e.g Sediment falling from a cliff

Question 2

What is output and example

Answer 2

Material or energy moving out of a system. e.g offshore ocean currents.

Question 3

Examples of components or stores

Answer 3

A beach or a sand dune

Question 4

What is a open system and example

Answer 4

A system that transfers both material and energy across its boundary’s to surrounding environments. e.g section of a coastline

Question 5

What is a closed system and example

Answer 5

A system that transfers energy, but not matter across it boundary’s to the surrounding environments. e.g Global water cycle

Question 6

What is positive feedback and example

Answer 6

When a change in the inputs brings about a greater change in the system. e.g temp rise leading to permafrost melting, to an increase in methane- leading to global temp rise

Question 7

What is negative feedback and example

Answer 7

When a change in inputs is balanced out and a new equilibrium is reached, the change is nuffilied. e.g rising co2 leads to more phot, decreasing co2

Question 8

What is a isolated system and example

Answer 8

These have no interactions with anything outside of the system boundary, there are no inputs or outputs. e.g controlled lab experiments.

Question 9

What are cascading systems

Answer 9

Transfer of mass and energy such that the output from one subsystem becomes the input for the adjacent sub system. e.g River sdeiment cascades into the coastal.