Ch. 1.2- Earth Systems. Target #10- I can identify how an earth system is described A system is an...
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Transcript of Ch. 1.2- Earth Systems. Target #10- I can identify how an earth system is described A system is an...
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Ch. 1.2- Earth Systems
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Target #10- I can identify how an earth system is described A system is an organized group of related
objects or components that interact to create a whole The operation of an Earth system is a result of
interaction between the two most basic components of the universe Matter & energy
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Matter & energy can be transferred A system is described by
the way energy is transferred within one system or between systems
Transfers are commonly accompanied by changes in the physical or chemical properties of matter
Target #10- cont.
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Target #11- I can contrast an open and closed system Open System
Both matter and energy are exchanged with the surroundings
Examples Lake
Water enters the lake through rain and streams
Water exits through evaporation
Sunlight and air exchange heat
Closed System Energy, but not
matter, is exchanged with the surroundings
Example Closed Jar
Light and heat can be exchanged through the jars sides
Matter can not exit or enter the system
Earth is mostly a closed system
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Target #12- I can list the 4 major spheres of Earth The physical environment of Earth is traditionally
broken into four major spheres Hydrosphere Atmosphere Geosphere Biosphere
Our environment is characterized by the continuous interactions of these spheres
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Target #13- I can describe the 4 spheres of Earth
Hydrosphere Includes all of the water
found on Earth Surface & groundwater
97% is salt water 3% is fresh water
Only 1% of all fresh water is available for drinking
Streams, glaciers, and groundwater are responsible for supporting life and creating many of Earth’s physical features
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Atmosphere A thin gaseous “envelop”
surrounding Earth If Earth were an apple, the
atmosphere would be the skin
Most air is close to the surface
Extends up to 800 miles The last 400 miles interact
with space Function
Provides the air we breathe 78% nitrogen 21% oxygen 1%- argon, water vapor,
methane, carbon dioxide Exchanges energy between
the surface and space
Target #13- cont.
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Target #13- cont.Geosphere
Includes all of the land found above and below the ocean
Not a uniform structureDivided by
composition Crust, Mantle, Core
Layers are fluid, or move freely.
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Biosphere Made up of all life forms Zone of life extends
from the ocean floor upwardCan go as high as
several thousand feet above sea level
Organisms help maintain and alter their physical environment
Target #13- cont.
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Identifying Relationships
For each of Earth’s four spheres, describe one way that the water cycle affects the sphere.