Types+of+system

 =WHAT IS A SYSTEM?= A system may be defined as any part of the universe that can be isolated for the purpose of observation and study.

There are 3 main types of systems

1- OPEN SYSTEM An open system exchanges matter and anergy with its surroundings. For example, an ecosystem. 2- CLOSED SYSTEM A closed system exchanges energy but not matter, the " Biosphere II" experiment was an attempt to model this. Closed systems do not occur naturally on earth.

3-ISOLATED SYSTEM An isolated system exchanges neither matter nor energy. No such systems exist ( with the possible exception of the entire cosmos.)