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World

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World Grid Population Challenge

Directions

First choose a grid size by typing ’30’, ’20’, or ’10’. A grid of that size lat/long will be placed on the map (so if you choose ’20’ the grid width and height will be 20 degrees). Then, double click on the grid square with the highest population within it (based on world 10km x 10km population density estimates). The highest-population remaining square will give you 100 points, all the way down to 0 for the one with the smallest population. Try to obtain the most points by successively double-clicking on the highest-populated grid square.

Enter grid spacing to begin ('30', '20', or '10')...

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NUMBER RANGE: (such as 2-5, 10+) means the city contains that many letters (excluding spaces and special characters).
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2+ WORDS means the city name has 2 or more words (words denoted by a space or hyphen).

At the end of the quiz the largest population missed answer will show in each square.

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At the end of the quiz the largest population missed answer will show in each unanswered square, and for those answered the largest city will be listed if you didn't answer it.

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You will be shown 10 different circles of radius 250-2000 km. Using the slider (or manually typing into the box below the slider), guess the population contained within each circle then click SUBMIT for each one. Populations are based on world population density at https://human-settlement.emergency.copernicus.eu/index.php.

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Ericksierra

2 months ago

Loved it!