Exam (elaborations)
Edexcel A-level Geography - Carbon Cycle June 2024 Exam Quiz Study Guide
- Course
- Institution
Edexcel A-level Geography - Carbon Cycle June 2024 Exam Quiz Study Guide
[Show more]
Seller
Follow
RevisionKing
Reviews received
Content preview
Edexcel A-level Geography -Carbon Cycle June 2024 Exam
Quiz Study Guide
Carbon Cycle - Answer>>Largest Carbon Store = Lithosphere/
Sedimentary (100,000,000 PgC)
Largest yearly flux = Photosynthesis (103 PgC from Atmosphere
560 to Biosphere 2,060)
Smallest Carbon Store = Atmosphere/ Plants (both 560 PgC)
Smallest yearly flux = Sedimentation/ fossilisation (0.2 PgC from
Deep Oceans 38,000 to Fossil Fuels 4,000)
Geological carbon formation - Answer>>1. Coal = duration and
heat intensity influences %C
2. Limestone = compaction/cementing of shells
3. Crude Oil = chemical decomposition of dead phytoplankton
Geological processes that release carbon -
Answer>>Outgassing and Partial melting of sedimentary rocks
Outgassing - Answer>>Release of CO2 in crust by volcanic
eruptions/earthquake activity (geysers/ hot springs)
Geological carbon cycle - Answer>>Slow (10-100 million tonnes
carbon/year) , huge carbon store
Anthropological carbon cycle - Answer>>Human caused, fast
(1,000 million tonnes carbon/year)
Biological carbon cycle - Answer>>Fast (10,000-100,000 million
tonnes carbon/year), flows and sequester between oceans,
vegetation and freshwater
, Phytoplankton - Answer>>Carry out photosynthesis by taking
out carbon from seawater which enables more carbon to enter the
sea (1,000 x more than respiration)
Biological pump - Answer>>Organisms feed on phytoplankton
and use carbon to make their shells (Calcium Carbonate). Carbon
moves from shallow to deep ocean when organisms die and sink
Carbonate pump - Answer>>Organisms remains turn into
sedimentary rock
Thermohaline Circulation - Answer>>System of surface and
deep ocean currents driven by temperature and salinity
differences. CO2 dissolves more readily in cold and deeper water
(25% diffused in Southern Ocean).
Physical pump - Answer>>Cold, denser seawater sinks into
deep ocean, where slow moving currents hold CO2. Deep
currents then return to the surface, warmed and diffuse CO2 back
into the atmosphere.
Terrestrial Carbon Cycling - Answer>>CO2 taken out of
atmosphere by plants photosynthesis (1000x more than
respiration), which is then eaten by consumers and later released
back into the atmosphere during decomposition.
Photosynthesis Equation - Answer>>
Biological decomposition - Answer>>Decomposers (worms)
feed on dead matter and break down into CO2, water and
nutrients. Soils store 20-30% carbon but can emit or sequester
CO2 depending on climate, soil type and management
Greenhouse gases - Answer>>CO2, CH4, CFCs, N2O
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller RevisionKing. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79223 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now