The object of this quiz is to click on the circle containing the largest population. When you begin you'll be shown 2 circles on the map with radii between 10 and 250 miles which do not intersect. Click on the one with the larger population within it (based on US census tract info) then 'Submit' - if you are correct you'll move on. One incorrect round and the quiz is over. Every 5 rounds the number of circles on the map will increase by 1. Try to build the longest streak of correct circles. Circles displayed will always be non-intersecting.
NOTE: You may have to zoom out to see all circles, occasionally a AK/HI circle will be included. Also, only population within the US is included in the total, any Canada/Mexico coverage counts as 0 population within the circle.
An idea… to facilitate learning from the quiz without having to look everything up, once you’ve made a guess, a hint could show you a descriptor of how close you got “Boiling/Very Hot/Hot/Warm/Cold/Very Cold/ Freezing” or something like that.
Currently there’s no way to know when you make a guess if you were even remotely close, esp. since most of the ones people miss are going to be on the edges of the map. In NYC, if I get something I don’t know it most likely will be in Staten Island, far reaches of Queens or the Bronx. Those places are all far apart, so the next time, I’d be more likely to get in the right area, instead of just randomly clicking around.