OCR A-Level Geography Geographical Debates overview quiz quiz

22 percent, the smallest written examination paper

36 percent, the largest component, and synoptic

20 percent, an independent coursework investigation

10 percent, taken as an optional component only

Milankovitch orbital cycles altering the seasonal distribution of solar radiation

Large explosive volcanic eruptions releasing ash and aerosols

Anthropogenic greenhouse-gas emissions, chiefly carbon dioxide

Gradual changes in the rotational length of the day

Faster silicate weathering steadily removing carbon dioxide from the atmosphere over time

Carbon dioxide fertilisation boosting plant growth and net primary productivity

Increased low cloud cover reflecting more incoming sunlight back into space

The ice-albedo feedback, where melting ice exposes dark surfaces that absorb more heat

The shift, with development, from an infectious-disease burden to a non-communicable-disease burden

The rapid spread of a single emerging infectious disease across several continents in a global pandemic

The complete and permanent eradication of all human infectious disease worldwide

The international movement of trained doctors and nurses between countries

Contagious proximity diffusion

Hierarchical diffusion

Relocation migration diffusion

Expansion network diffusion

They belong outright to a single powerful coastal state that enforces all of the rules across them

No one ever uses them for fishing, shipping or resource extraction of any kind

They are a global commons beyond national jurisdiction, prone to the tragedy of the commons

They are already fully protected by one universally binding international law

Because the world simply does not produce enough total food to feed its current population at all

Because food cannot realistically be transported across long distances to the regions that need it most

Because everyone now has broadly equal purchasing power and equal physical access to markets

Because the world produces enough food overall, so hunger reflects poverty, distribution and conflict

They can carry environmental costs and may not solve access problems rooted in poverty

They always reduce crop yields below previous traditional farming levels in every case

They are illegal in almost every country and cannot be deployed at any meaningful scale

They reliably guarantee a perfectly equal distribution of food to all people everywhere

The physical magnitude of the earthquake on its own, with nothing else mattering

Differences in vulnerability, set by development and governance

Only the time of year when the earthquake happens to strike

Mainly the type and colour of the local surface rocks

Because they create new oceanic crust rapidly as the two plates pull steadily apart from each other

Because conservative margins are always found deep underwater far away from any inhabited landmass

Because plates slide past each other, releasing stress as earthquakes, but no magma is generated

Because conservative margins only ever occur directly above isolated mantle hot spots

AO3 only

AO1, AO2 and AO3 equally

AO2 and AO3 only

AO1 and AO2 only

Drawing together knowledge from different parts of the course to analyse an issue

Memorising the content of one single topic in complete isolation from the rest

Answering only short multiple-choice questions rather than extended written responses

Deliberately avoiding the use of any located case studies in your answers