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