Difference between revisions of "System"
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===About Systems=== | ===About Systems=== | ||
There are three important types of [[system]] which can be [[observed]] by a [[scientist]]: | There are three important types of [[system]] which can be [[observed]] by a [[scientist]]: | ||
| − | *[[Open System]] - In an [[Open System|open system]] [[mass]] and [[energy]] | + | *[[Open System]] - In an [[Open System|open system]] [[mass]] and [[energy]] can get in and out. In these [[system]]s the laws of [[Conservation of Energy]] and [[Conservation of Mass]] cannot be observed. |
*[[Closed System]] - In a [[Closed System|closed system]] [[mass]] cannot get in or out, but energy can. In these [[system]]s the law of [[Conservation of Mass]] can be [[observed]] but the law of [[Conservation of Energy]] cannot. | *[[Closed System]] - In a [[Closed System|closed system]] [[mass]] cannot get in or out, but energy can. In these [[system]]s the law of [[Conservation of Mass]] can be [[observed]] but the law of [[Conservation of Energy]] cannot. | ||
*[[Closed Isolated System]] - In a [[Closed Isolated System|closed isolated system]] neither [[mass]] nor [[energy]] can get in or out. In these [[system]]s both the laws of [[Conservation of Energy]] and [[Conservation of Mass]] can be [[observed]]. | *[[Closed Isolated System]] - In a [[Closed Isolated System|closed isolated system]] neither [[mass]] nor [[energy]] can get in or out. In these [[system]]s both the laws of [[Conservation of Energy]] and [[Conservation of Mass]] can be [[observed]]. | ||
Revision as of 11:08, 23 January 2019
Key Stage 4
Meaning
A system is an object or group of objects being studied by a scientist.
About Systems
There are three important types of system which can be observed by a scientist:
- Open System - In an open system mass and energy can get in and out. In these systems the laws of Conservation of Energy and Conservation of Mass cannot be observed.
- Closed System - In a closed system mass cannot get in or out, but energy can. In these systems the law of Conservation of Mass can be observed but the law of Conservation of Energy cannot.
- Closed Isolated System - In a closed isolated system neither mass nor energy can get in or out. In these systems both the laws of Conservation of Energy and Conservation of Mass can be observed.