Oceanography
20 CDS Geography past-year questions from 14 papers, 2016 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 5 easy · 12 moderate · 3 hard.
- Most-asked subtopics: Ocean Currents (8), Marine Ecosystems — Coral Reefs (5), Salinity and Composition of Sea Water (3).
- Updated 28 August 2026.
#1Ocean Currents
#2Salinity and Composition of Sea Water
#3Tides and Ocean Movements
#4Ocean Currents
#5Marine Ecosystems — Coral Reefs
Done a few? Here’s your next move
#6Marine Ecosystems — Coral Reefs
#7Ocean Currents
#8Marine Ecosystems — Coral Reefs
#9Marine Ecosystems — Coral Reefs
#10Ocean Waves and Sea-Floor Topography
#11Ocean Currents
#12Ocean Currents
#13Ocean Currents
#14Marine Ecosystems — Coral Reefs
#15Salinity and Composition of Sea Water
#16Ocean Currents
#17Ocean Currents
#18Ocean Waves and Sea-Floor Topography
#19Salinity and Composition of Sea Water
#20Tides and Ocean Movements