The earth as a system Flashcards
Spheres
Main parts of the earth as a system
The four main spheres of the earth
Atmosphere
Lithosphere
Hydrosphere
Biosphere
Biosphere
- The living sphere of the earth
- Includes all of life
- Occurs where the atmosphere, lithosphere and hydrosphere all come together
Atmosphere
The sphere of the earth that is the gases
Lithosphere
The sphere of the earth that is the rock and soil
Hyrdrosphere
The sphere of the earth that is the water (solid, liquid and gas)
A system
- Something made of many different parts
- Parts are interconnected
- Parts are all essential for the whole system to function properly
Which spheres are interacting?
Water erodes soil and carries sediment to the sea
Lithosphere and hydrosphere
Which spheres are interacting?
Water evaporates in the sea and forms clouds
Hydrosphere and atmosphere
Which spheres are interacting?
Volcanoes erupt shooting gases and dust up into the air
Lithosphere and atmosphere
Life also needs more than just what is found in the earths spheres to exist. What is this?
Energy from the sun / solar radiation
The process whereby solar radiation is used by certain organisms to make food
Photosynthesis
Spheres involved in the process of photosynthesis
- Atmosphere: carbon dioxide used and oxygen produced
- Hydrosphere: water used from the soil
- Lithosphere: soil provides water and nutrients
- Biosphere: the organism is living
The general location of the biosphere
Close to the surface of the earth
Limiting factors as one goes higher in the atmosphere
- the oxygen becomes less dense
- It gets colder