Visual Presentation

Positive Feedback

Closed System (Vivian,Mind and James )

Closed System (when the surrounding affect with the system)

What is closed system ?

An isolated system that has no interraction withj the surrounding

Example

Closed pot because its the energy inside just cycling themselves inside it.

Opened System (Angel,Nat and James)

Open System

What is Open System

Its a system that interact with other systems or the environment by exchanging energy and matter with its surrounding

Boiling soupin an opened saucepand - transfer of energy, the soup receive the energy from the air outside causing evaporation

Water Cycle

The sun give energy to the water by heating it up. once the water receive the heat, it turns into steam and flow in the air

Isolated System (Tee,Jinny,Kim)

Isolated - a system which none of the matter or energy intergeres with. These system cannot be found naturally.

Example is Universe itself where the surround  may change but the boundaries of the system cannot be changed 

In the closed system an energy can be changed but not the matter . For the isolated system both energy and matter cannot be changed at all 

Negative Feedback (Far, New,Mugi)

What is negative feedback 

-Its a reaction to a system which causes decrease in a function in order to maintain equailibrium 

-It works by reducing theeffect of one system 

Example 1 

1:The higher the body temperature, the more person sweats 

2:The more a person swears, the lower will be body temperature 

3:In this system, high body temperature causes sweating, but sweating in turn causes body temperature lower down 

Flow and Storage (Pleng,Jihyun,Kan)

Explanation from textbook

Flow:movement through a system in the form of inputs and outputs. Can be either tranfers or transformations 

Storage: The stock or reservoir of energy and matter in a system 

What is flow and storage? 

Flow (inout and outputs) and storage(matter of energy or stock) is energy and matter flow through and stored in our ecosystem