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19 Cards in this Set
- Front
- Back
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Crust
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The thin solid outermost zone of the earth
1% of the earth's mass |
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Mantle
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The layer under the crust
2,900km thick 2/3 of the earth's mass |
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Core
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Center Sphere of the earth
3,500 km Made up of iron and nickel |
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What are the compositional zones of the earth
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crust, mantle, core
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What are the structural zones of the earth?
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Lithosphere, asthenosphere and mesophere
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Lithosphere
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the solid outer layer made of the crust and the rigid upper part of the mantle
15-300km thick |
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asthenosphere
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the solid plastic layer of the Mantle beneath the lithospher made of mantle rock that flows 200-250km thick
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mesophere
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2,900 km layer of solid mantle rock
The "middle sphere" between the mantle and outer core |
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System
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An organized group of related objects or components
that interact |
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Earth system
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interaction between matter and energy
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What are the four earth's
spheres? |
Atmosphere, hydrosphere, geosphere, biosphere
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What is atmosphere
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a mixture of gases that surround a planet or moon
78% nitrogen 21% oxygen 1% other gases |
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What is a hydrophere
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The portion of the earth that is water 71%
97% salt water 3% fresh |
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What is geosphere?
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Mostly solid part of the earth
All the rock and soil on the surface of the continents and on the ocean floor. |
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What is the Biosphere?
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The part of the earth where life exists, includes all of the living organisms on earth.
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Ecosystem
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A Community of organisms and the environment that the inhabit
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Carrying Capacity
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the largest population that an environment can support
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Food Web
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The relationship between many food chains The diagram that shows the feeding relationships among organisms in the ecosystem.
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Food Chain
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The sequence in which organisms consume other organisms
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