The hydrological cycle is considered a closed system because water is continuously recycled through evaporation, condensation, precipitation, and runoff. Water enters and exits the cycle naturally, but the total amount of water on Earth remains relatively constant.
Earth is a closed system in terms of matter, meaning that no new matter is added from outside the system. Matter can cycle within the Earth's systems (such as the water cycle or carbon cycle), but it does not enter or leave the planet.
The Earth is mostly considered a closed system because it exchanges energy with its surroundings but not matter. However, it can also be viewed as an open system when considering the input and output of matter through processes like meteorite impacts or atmospheric escape.
A system is a well-defined group of objects that transfer energy to one another. This transfer can take place as a result of mechanical work, heat, or electromagnetic radiation within the system. Systems can be open, closed, or isolated depending on the exchange of matter and energy with their surroundings.
Earth is an open system with respect to energy, as it receives energy inputs from the Sun in the form of sunlight and radiates heat back into space. Additionally, Earth is an open system with respect to matter, as it exchanges gases, water, and nutrients with its surroundings through processes like photosynthesis, respiration, and the water cycle.
Coral typically does not have a circulatory system. They rely on diffusion to transport nutrients and gases throughout their tissue. Water movement plays a crucial role in supplying coral with food and oxygen while removing waste products.
Closed System
Earth is a closed system in terms of matter, meaning that no new matter is added from outside the system. Matter can cycle within the Earth's systems (such as the water cycle or carbon cycle), but it does not enter or leave the planet.
typically open
A closed system maintains itself on a limited amount of resources that are entrenched in that particular system. Energy can be exchanged with other systems, but not any actual matter. Therefore, some of what goes on in the environment is considered a closed system, but not a whole lot. Open systems are much more common. In an open system, necessary resources are renewed and exchanged on a regular basis. Many ecosystems, for example, rely on the sun to constantly import energy into their basic cycles. Then there's a limited amount of nutrients to go around -- such as carbon, nitrogen and phosphorous -- and they're constantly cycled around. Some common cycles include the hydrological cycle, rock cycle and the carbon cycle. http://curiosity.discovery.com/question/difference-closed-open-system
The light bulb is a closed system: no mass transfer.
Drainage Basins are open systems. This is because they are open to input from outside the system. For example: Rain which evaporated from outside the system, could travel through the atmosphere, before dropping as precipitation (rain/snow) into the drainage basin. This means extra water has entered the system. Drainage basins also lose water. This is because all drainage basins fuel a river, which then leads to the sea. This means water escapes the system. An example of a closed system is the hydrological cycle.
In an open cycle gas turbine, the gases that are produced by combustion go directly into the atmosphere, though the heat produced can sometimes be reclaimed. In a closed cycle gas turbine, the gases produced are reused and are not emitted into the atmosphere.
Amphibians have closed circulatory system Closed
Open loop (single cycle) involves a break requiring a restart, easily adapted to closed loop.
closed circulatory system
The phosphorus cycle is considered a closed system because phosphorus does not have a gaseous phase and tends to remain in the solid or dissolved form in ecosystems. This means that phosphorus is continuously recycled within ecosystems through processes like weathering, uptake by plants, and decomposition.
A battery-operated wrist watch is a closed system. A wind-up wrist watch is an open system.