PHYSICAL GEOGRAPHY The Earth System

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PHYSICAL GEOGRAPHYThe Earth System

• Chapter 1
• C.J. Cox

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The Earth System

• System- a set of components that are
  interrelated.
• Earths Major Subsystems -
• atmosphere
• lithosphere
• hydrosphere
• biosphere

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EARTHS MAJOR SUBSYSTEMS
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BIOSPHERE
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LITHOSPHERE
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HYDROSPHERE
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ATMOSPHERE
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The Earth System

• Earths Major Subsystems -
• atmosphere
• blanket of air that surrounds the earth
• lithosphere
• sphere of the solid crust including rocks,
  landforms
• hydrosphere
• system of water including rivers, subsoil water
  and atmospheric water
• biosphere
• sphere of life including plants and animals

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Closed/Open Systems

• Closed System- no material or energy enters or
  leaves the system (ie. Solar System)

• Open System - material or energy enters and
  leaves the system ( river system)

Input
Self- contained
Output
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Key Terms

• Environment -surroundings that affect the
  development of an organism
• Ecosystem - community of organisms functioning
  together in an interdependent relationship with
  the environment
• Dynamic Equilibrium -changing relationships among
  the variables of a system which produces a
  balance between the amounts of materials that
  enter or leave a system

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Earth Movements

• Revolution Rotation
• Aphelion Perihelion
• Angle of Inclination
• Plane of the Ecliptic Equator
• Circle of Illumination
• Winter Summer Solstices
• Spring Fall Equinoxes

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Revolution Around The Sun
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Earths Elliptical Orbit Around The
Sun
Sun
Perhelion
Aphelion
July 3
January 3
91,000,000 miles
94,000,000 miles
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EARTHS ROTATION
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Rotation or Spinning
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Angle of
Inclination
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Parallelism
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Earth Movements

• Revolution Rotation
• Aphelion Perihelion
• Angle of Inclination
• Plane of the Ecliptic Equator
• Circle of Illumination
• Winter Summer Solstices
• Spring Fall Equinoxes