How do I play this quiz?

Test your knowledge with the 100 Tallest World Mountains By Prominence Identifier Quiz. Double-click on markers to guess the highest peaks and save your score.

Do abbreviations or alternate spellings count?

Yes. Most quizzes allow common abbreviations, alternate spellings, and short forms. Try typing just the first few letters — if it matches, it will autofill.

Identifier Quizzes

100 Tallest World Mountains By Prominence Identifier

Double-click on the light-blue marker of the mountain listed (among the top 100 tallest by prominence - see note below). Correct guesses will change the marker to green – incorrect will not change any marker. Complete all mountains to save your score.

Prominence is the elevation of a summit relative to the highest point to which one must descend before reascending to a higher summit. Think of it as the height of a mountain relative to the closest higher mountain. So a mountain that is the highest of anything nearby will have a high prominence, while nearby mountains that are close but not as tall will have a relatively low prominence.

If by chance you don’t see markers, try refreshing the quiz.

245

World 100 Largest Cities Identifier

Double-click on the red marker of the World top 100 largest city listed. Correct guesses will change the marker to green – incorrect will not change any marker. Complete all cities to save your score.

If by chance you don’t see markers, try refreshing the quiz.

786

World 100 Largest Islands Identifier

Double-click on the light-blue marker of the world island listed (among the top 100 largest islands by area). Correct guesses will change the marker to green – incorrect will not change any marker. Complete all islands to save your score.

If by chance you don’t see markers, try refreshing the quiz.

609

World 50 1M+ Agglomerations Identifier

You will be shown a map with red markers for all 1M+ world agglomerations. Double-click on the one specified to answer it. If you click on the correct agglo, the marker will turn green. Otherwise no change will be made to the markers. 50 randomly chosen agglos will be given. A handful of agglos have the same name as another agglo in a different country - for these the country will be specified.

Note - you may want to zoom in if agglos are close to one another to make sure you are clicking on the correct one.

If the red markers do not appear when the quiz is loaded, try refreshing the page.

582

World Capitals Identifier

Double-click on the red marker of the world capital listed. Correct guesses will change the marker from red to green - incorrect will not change any marker. Complete all capitals to save your score.

Note - you may have to zoom in if a couple capitals are close to each other to make sure you click on the correct one.

If by chance you don't see red markers, try refreshing the quiz.

563

World Cities Grid Identifier Challenge

The object of this quiz is to double-click the grid square where cities are located (the centroid of the city is used). When you begin you will have a grid randomly placed with size 15 degrees latitude by 15 degrees longitude. You will be told which city to locate – simply double-click on that city’s grid square and you will move on to the next city. Each time you go to a new city the squares are randomly redrawn and with a size 10% smaller. The first 10 cities will be 5M+, the next 10 2.5-5M, next 10 1-2.5M and the balance (until you run out of time or guess wrong) will be 500K-1M. When you guess wrong the correct location will be shown as a pink marker.

You will not get more than one city per country in the first 3 groupings of 10, however for the final balance (when the cities are 500K-1M) there is no limit to how many cities in one country you will get.

You do get a break if you are within 2 km of the city but in the wrong square – you will not get credit for the guess but will get another chance at that level.

After the quiz is over you can click RESTART to retry it without refreshing the page.

16032

World Closest 50K+ Cities To Your Location Identifier – Choose Number

First, enter '25', '50', or '100' - then double-click on the red marker of that number of closest World 50K+ cities to your geographic location (as determined by your browser's location function). To use this quiz you will have to choose 'Allow' if your browser asks to share your current location - you also may have to restart the quiz after choosing this. If your browser does not allow getting your location the quiz will not load.

Correct guesses will change the marker to green – incorrect will not change any marker. Complete all cities to save your score.

If by chance you don’t see markers, try refreshing the quiz.

503

World Countries Identifier

You will be given country outlines along with red markers for smaller countries. Double-click on each world country (either within the outline or on the red marker if the country has a marker) as it is listed. Clicking on the correct country will change the country/marker green. Clicking incorrectly will cause no change.

If the red markers do not load immediately, try refreshing the quiz.

1800

World Countries Identifier Challenge

Double-click on the World country listed – there are no outlines on the map to make this a little more challenging. Complete all countries or click End Quiz to save your score.

Quiz may take a moment to load.

1943

World Dependent Territories Identifier

Double-click on the red marker of the territory listed. Correct guesses will change the marker from red to green - incorrect will not change any marker. Complete all territories to save your score.

Some of these territories may have a different legal status than others, and often territories that are made up of multiple entities have been split into those entities.

Note - you may have to zoom in if a couple territories are close to each other to make sure you click on the correct one.

If by chance you don't see red markers, try refreshing the quiz.

361

World Disputed Territories Identifier

Double-click on the colored marker of the disputed territory listed. Correct guesses will change the marker to green - incorrect will not change any marker. You can complete all locations to save your score or click End Quiz at any time also to save it. Dispute involves at least one independent country (as based on the 197 countries I use for my country quizzes). Some disputes may be mostly resolved but still partly disputed by one country.

Note - you may have to zoom in if a couple locations are close to each other to make sure you click on the correct one.

If by chance you don't see markers, try refreshing the quiz.

NOTE: sometimes a river is listed - this refers typically to islands within the river - the marker will be at the mouth of the river. If two locations are listed together they are close to each other and only one marker is placed corresponding to them.

241

World Mapper Identifier

Double-click on the colored marker of the location (country, territory, etc) listed. Correct guesses will change the marker to green - incorrect will not change any marker. You can complete all locations to save your score or click End Quiz at any time also to save it.

Note - you may have to zoom in if a couple locations are close to each other to make sure you click on the correct one. Also - Antarctic claim markers are placed at the midpoint of their longitude range for overlapping claims.

If by chance you don't see markers, try refreshing the quiz.

NOTES: two Pacific island groups are labeled according to their collective name (be it a country, territory, etc) and also have labels for separate island groups within them. Countries are the 197 sovereign states. Dep Terr are dependent territories. Adm Divisions are integral parts of countries, be they administrative divisions or Sections of a Sovereign State. De Facto State refers to a non-UN member state recognized as independent to some degree not included in the countries list. Other refers to a handful of special designations. Some of the entities may be disputed. Antarctic claims are all below 60 deg South and DO NOT count toward any other category except Uninhabited. Uninhabited refers to entities which have no permanent settlement not including a base of revolving inhabitants (i.e. there needs to be a permanent year-round population of the same people). UN Non Self Gov refers to territories on the UN’s Non Self-Governing Territories List.

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World Countries Identifier Challenge Double-click on the World country listed – there are no outlines on the map to make this a little more challenging. Complete all countries or click End Quiz to save your score. Quiz may take a moment to load.

World Countries Identifier Challenge

Double-click on the World country listed – there are no outlines on the map to make this a little more challenging. Complete all countries or click End Quiz to save your score.

Quiz may take a moment to load.