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The Systems Concept. River Lake Watershed Ridgetop Sediment Sed. Rock. A system is any part of the universe that can be separated to make observations. Lindsley, 8/99. Isolated System - no exchange of energy or matter. Closed System - energy may be exchanged. - PowerPoint PPT Presentation
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The Systems Concept
A system is any part of the universe that can be separated to make observations.
River
Lake
Watershed
Ridgetop
Sediment
Sed. Rock
Lindsley, 8/99
Isolated System - no exchange of energy or matter
Closed System - energy may be exchanged.
Open System - both energy, matter exchanged.
Lindsley, 8/99
Open System: sunlight and water enter from outside, heat and water leave the island
Lindsley, 8/99
Earth approximates a closed system
The resources we have are ALL we
will ever have.
Energy enters as solar radiation, leaves as heat
Almost no matter enters or leaves
Lindsley, 8/99
4 Main Subsystems of Earth
Biosphere = life
Atmosphere = air (gases)
Lithosphere = outer rigid shell
of rock
Hydrosphere = water
Lindsley, 8/99
Earth is unique because of its water
• Earth is the only terrestrial planet whose temperature cycles around the freezing point of water.
Lindsley, 8/99
Lindsley, 8/99
Conditions on Earth allow water to exist in all 3 of its phases
Lindsley, 8/99
Lindsley, 8/99
Lindsley, 8/99
Lindsley, 8/99
Lindsley, 8/99
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