A good way to explain something is to think of it as a system.
Published on Sep 10, 2017
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We could be talking about a tree, planet Earth, transportation in a country, diseases, a forest, an ant, water, or the Sun.
A system occurs whenever parts combine or connect with each other to form a whole.
The Sun is a system with many parts.
Photo by NASA Goddard Photo and Video
A flea is a system with many parts.
Photo by Michael Wunderli
Water is "H two 0," which means that it consists of two parts of hydrogen (H) and one part of oxygen (0).
Photo by Zero Emission Resource Organisation
If we run an electric current through water, we can break it down into the two gases hydrogen and oxygen.
When we break down water, we get twice as much volume of hydrogen compared with the volume of oxygen.
Photo by Qfamily
If we combine the hydrogen and oxygen back together
We get water
Hydrogen is a highly explosive gas.
Photo by Official U.S. Navy Imagery
Oxygen is a gas that is needed for fires.
Photo by Event Essentials Photography & Decor
Together they form water, a liquid that puts out fires.
From a systems point of view, water is a whole that has properties that are very different from those of its parts.
Photo by Julian Evil
Table salt provides another example.
Photo by Leonid Mamchenkov
It is made of sodium and chlorine.
Photo by NASA's Marshall Space Flight Center
Sodium is a shiny metal that bursts into flames when it touches water.
Chlorine is a green poisonous gas.
Photo by CarbonNYC [in SF!]
Put them together and you get a white solid that we love to put on our food.
Photo by Jeremy Brooks
Salt is a whole that has properties that are very different from those of its parts.
Photo by larryjh1234
We are surrounded by all sorts of systems.
Photo by Royalty-free image collection
In fact, each of us is our own little system.
Photo by perpetualplum
Nerve cells
Photo by ocean.flynn
Bone cells
All join together to form an incredible system—an individual human person.
Photo by Luz Adriana Villa A.
Each of the parts of a system is itself a system that is made of parts.
Photo by @lattefarsan
The parts of the circulatory system include heart, veins, arteries, and blood cells.
Photo by MyArthritis
The heart has four different sections plus valves that open and close to make sure the blood flows into the correct section at the correct time.
Each section of the heart is also a system of different cells such as muscle cell and nerve cells
We could get dizzy visualizing all these systems within systems within systems that are inside each one of us.
Photo by THX0477
But we are not the biggest system around.
Photo by D.Boyarrin
Each of us is part of an ecosystem.
Each of us is part of an entire human system that is part of a system of life on this planet.
Photo by woodleywonderworks
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Without knowing it, as a child you played with making systems.
Photo by horizontal.integration
You probably played with toys that had a few parts from which you could make lots of very different things.
Photo by Slack pics
The things were different from the simple building parts, and from each other.
Just use a few words
Photo by Danielle MacInnes
