The Carbon Cycle

Descripción

A level (Water & Carbon Cycles) Geography Apunte sobre The Carbon Cycle, creado por Orlagh Bonser el 06/02/2018.
Orlagh Bonser
Apunte por Orlagh Bonser, actualizado hace más de 1 año
Orlagh Bonser
Creado por Orlagh Bonser hace más de 6 años
35
1

Resumen del Recurso

Página 1

What is the CARBON CYCLE? the cycling of carbon between its different stores (ocean, land, lithosphere, atmosphere) - carbon is one of the most chemically versatile elements - present in all life forms - can be found organically (biomass) or inorganically (fossil fuels) carbon compounds can be very important - carbon dioxide (keeps the earth warm) - methane (greenhouse gas) - limestone - hydrocarbons (fossil fuels) - molecules (DNA)

What are the ORIGINS of carbon on Earth? - interior of the Earth (from within the mantle - semi-molten layer) - plate boundaries (from mantle. Moves up through due to volcanic eruptions) - stores such as biomass and oeans - carbon removal (atmosphere/photosynthesis/when locked up in sedimentary rocks) Carbon Stores LITHOSPHERE - crust and upper mantle - inorganic form (fossil fuels and limestone) - also organic form in humic substances (decaying matter) stores...    - peat    - fossil fuels    - soil    - marine sediments (sedimentary rocks) HYDROSPHERE - oceans - dissolved carbon dioxide - organisms like fish and plankton and some plants stores...    - surface level    - intermediate layer    - living organic matter BIOSPHERE living part  - animals - peat - living vegetation - soil humus - plant litter ATMOSPHERE - carbon dioxide as a gas (control's Earth's temperature) - atmospheric carbon dioxide is increasing (Mauna Loa Curve) - caused by human activities releasing carbon dioxide into the atmosphere    

Página 2

How does carbon MOVE BETWEEN STORES? - human processes - geological components - photosynthesis - decomposition - oceanic carbon pumps - combustion - volcanic activity

What is a CARBON SINK? store that takes in more carbon than it releases What is a CARBON STORE? releases more carbon than it takes in

Geological components The rock cycle    - volcanic activity    - subduction at plate boundaries    - burial    - weathering    - formation of limestone due to the formation of carbonic acid         - sedimentary rock that contains limestone. Through plate subduction, the limestone is melted and released through volcanic activity and the carbon dioxide is released into the atmosphere. Photosynthesis - formation of glucose by plants - uses carbon dioxide Respiration - releases energy from glucose - also produces carbon dioxide Decomposition - recycles carbon into soil by deceomposers Oceanic Carbon Pumps - to do with oceanic circulation of warmer or colder currents (deeper) - cools when in contact with ice and sinks (denser) - transfers carbon dioxide from warmer currents to colder currents Combustion - releases carbon dioxide from organic material when burnt Volcanic eruptions - CO2 is stored in the mantle  Human Activity - extraction of hydrocarbons - farming practices - deforestation - consumption of fossil fuels - urban growth

Carbon Sequestration - carbon dioxide is captured from the atmosphere and held in long term storage - helps prevent global warming - geological sequestration (within rocks) - terrestial (within trees and plants)  

What are the effects of the CHANGING CARBON BUDGET? (GLOBAL WARMING) - effects on land are unclear as it hasn't been studied for long enough Oceans - sea level rise - melting sea ice - acidification (removes carbonate ions - less alkaline - coral bleaching) - salinity is reduced - cloudy water - increase in phytoplankton - less sunlight reaching plants

Mostrar resumen completo Ocultar resumen completo

Similar

AS Biology Unit 1
lilli.atkin
Geography Coastal Zones Flashcards
Zakiya Tabassum
AQA Biology 8.1 structure of DNA
Charlotte Hewson
Characteristics and Climate of a hot desert
Adam Collinge
Biology AQA 3.1.3 Cells
evie.daines
Biology AQA 3.2.5 Mitosis
evie.daines
Biology AQA 3.1.3 Osmosis and Diffusion
evie.daines
GCSE Biology AQA
isabellabeaumont
Tectonic Hazards flashcards
katiehumphrey
Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
Henry Kitchen
Germany 1918-39
Cam Burke