1.4 Earth as a System
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What is the hydrosphere?
the water portion of our planet 96.5% of the hydrosphere are oceans
What is the atmosphere?
Earth’s gaseous envelope Allows life on Earth to be habitable: protection from the sun & keeps Earth warm
What is geosphere?
the solid Earth the largest of Earth’s four spheres by volume
What is the biosphere?
The totality of all plant and animal life on our planet
What is earth system science?
An interdisciplinary study that seeks to examine Earth as a system composed of numerous interacting parts or subsystems
What is a system?
A group of interacting or interdependent parts that form a complex whole
What is an open system?
A system in which energy and matter can exchange with the environment
What is a closed system?
A system in which energy can be exchanged with the environment but matter cannot be exchanged
What is a isolated system?
A system in which energy nor matter can be exchanged with the environment
What kind of system is Earth?
It is a closed system
What are the sources of energy that power the earth system?
The Sun Earth’s interior with the hear remaining from when our planet formed and heat that is continuously generated by radioactive decay.