The Earth's System Flashcards
1
Q
Includes the rocks that make up Earth
A
Geosphere (Lithosphere)
2
Q
Major Divisions of Geosphere
A
Crust, Mantle, Core
3
Q
2 Types of Crust
A
Oceanic Crust & Continental Crust
4
Q
Oceanic Crust
A
- outermost solid layer
- composed of basaltic rocks
- thinner (7km)
5
Q
Continental Crust
A
- thicker (25 -70km)
- one-third of the Earth’s surface
- granitic and felsic rocks
6
Q
thickest layer of the geosphere
A
Mantle
7
Q
- The only liquid layer, made up of iron and nickel
- Responsible for Earth’s magnetic field
A
Outer Core
8
Q
Inner Core
A
solid and distinct from the outer core
most of the Earth’s sulfur is in here
9
Q
covers about 70% of the Earth’s surface
A
Hydrosphere
10
Q
The frozen water part of the system
A
Cryosphere
11
Q
A mixture of gasses that surrounds the planet. shield us from the UV radiation
A
Atmosphere
12
Q
Composition of Earth’s Atmosphere
A
Nitrogen - 78 %
Argon - 0.9%
Oxygen - 21 %
Neon - 0.1%
13
Q
Layers of Earth’s Atmosphere
A
Exosphere
Thermosphere
Mesosphere
Stratosphere
Troposphere
14
Q
Troposphere
A
- most of Earth’s weather happens here
- densest and atmospheric layer
15
Q
- home to Earth’s ozone layer
- cloud & weather free
A
Stratosphere
