Water or land
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The body of water and the land use the same scale and an equal-area projection. Their outlines therefore retain the true area ratio. The difference between the answers becomes smaller at each stage.
About the quiz: Water or land
This quiz sets an ocean or sea against a continent or a large island at the same scale. Your task is to pick the larger area. The outlines are drawn in an equal-area projection, so they keep their true proportions.
How are the questions built?
Each round has 10 questions. The water side has 11 bodies of water (oceans and seas), and the land side 11 areas (continents and large islands). The area gap between the answers shrinks at each stage: from 50% to 150% in the first questions to only 2% to 8% in the last ones.
Where does the data come from?
Areas come from the source assigned to each area: Encyclopaedia Britannica, NOAA and Geoscience Australia (published 2024). Outlines come from Natural Earth data.
A fact from the data
The Pacific Ocean covers 165.3 million km², more than all seven continents combined (148.9 million km² according to the same sources).