Moon Map Quiz – Find the Seas, Craters and Apollo 11

All 20 places on the diagram

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Start here: the largest seas 8

Ocean of Storms (Oceanus Procellarum) The largest dark plain of old lava, down the left side.
Sea of Showers (Mare Imbrium) The big round sea at the upper left of center.
Sea of Serenity (Mare Serenitatis) The round sea just right of the top center.
Sea of Tranquility (Mare Tranquillitatis) The wide sea right of center, where Apollo 11 landed.
Sea of Crises (Mare Crisium) The oval sea alone near the right edge, above the middle.
Sea of Fecundity (Mare Fecunditatis) The long sea near the right edge, below the middle.
Sea of Clouds (Mare Nubium) The sea below the center, toward the left.
Sea of Cold (Mare Frigoris) The long thin sea across the top.

All ten seas 2

Sea of Nectar (Mare Nectaris) The small round sea at the lower right, under Tranquility.
Sea of Moisture (Mare Humorum) The small round sea at the lower left.

Craters 7

Tycho A crater with long bright rays, named for Tycho Brahe.
Copernicus A rayed crater named for the astronomer Copernicus.
Kepler A crater named for Johannes Kepler, a German astronomer.
Aristarchus A crater named for Aristarchus, a Greek astronomer.
Plato A crater named for the Greek philosopher Plato.
Clavius A crater named for Christopher Clavius, a German mathematician.
Grimaldi A crater named for Francesco Maria Grimaldi, an Italian astronomer.

Mountains and a landing site 3

Montes Apenninus (lunar Apennines) A mountain range named after the Apennines on Earth.
Montes Alpes (lunar Alps) A mountain range named after the Alps on Earth.
Apollo 11 landing site Where people first landed on the Moon, in July 1969.

How this list was compiled: Every name, its meaning and its position checked on 2026-10-01. (1) International Astronomical Union, Gazetteer of Planetary Nomenclature, hosted by the US Geological Survey: the Moon center points file linked from https://planetarynames.wr.usgs.gov/GIS_Downloads (each feature's approved name, the origin of the name, its center latitude and longitude, its extent and its diameter). (2) NASA Science, Moon Viewing Guide, https://science.nasa.gov/moon/viewing-guide/ (the dark areas are solidified lava, called lunar seas or maria; the craters Copernicus, Kepler, Aristarchus and Tycho and the rays of Copernicus and Tycho). (3) NASA Science, Moon Facts, https://science.nasa.gov/moon/facts/ (Tycho and Clavius). (4) NASA, Apollo 11, https://www.nasa.gov/mission/apollo-11/ (the landing in July 1969; Tranquility Base). (5) Wikipedia: List of plains on the Moon, https://en.wikipedia.org/wiki/List_of_plains_on_the_Moon; Lunar mare; Near side of the Moon; Plato (crater); Grimaldi (crater); Clavius (crater); Montes Apenninus; Montes Alpes; Tranquility Base. Licence: own work

The drawing: Drawn for this site on 2026-10-01, each feature placed by its latitude and longitude in the IAU Gazetteer of Planetary Nomenclature on an orthographic projection, with outlines simplified by hand. Own original drawing; no photograph or map is traced. Licence: own work

How it works

This moon map quiz names a place and you tap it on the near side of the Moon, drawn with north at the top. Ten seas are asked first, then seven craters, two mountain ranges and one landing site.

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Seas that sit side by side

Serenity and Tranquility lie together right of center: Serenity is the round one nearer the top, Tranquility the wide one with the star on its edge. Crises and Fecundity are both near the right edge, Crises above the middle and Fecundity below it. Nectar and Moisture are the two small round ones: Nectar under Tranquility, Moisture at the lower left.

Craters that look alike

Kepler and Aristarchus are both small rayed rings inside the Ocean of Storms; Aristarchus is the higher one. Plato and Grimaldi are both filled ovals: Plato at the top, between the Sea of Cold and the Sea of Showers, and Grimaldi at the far left edge.

Questions and answers

What do the names of the seas on the Moon mean?

Mare is Latin for sea. The rest of a name is a Latin term for weather, as in Mare Imbrium, the Sea of Showers, and Mare Nubium, the Sea of Clouds, or for another abstract idea: Mare Serenitatis and Mare Tranquillitatis name states of mind.

Who names the craters on the Moon?

The International Astronomical Union approves every name. Its theme for lunar craters is scientists, engineers and explorers who made outstanding contributions to their field, and its themes for mountain ranges include the ranges of Earth. On this map, Copernicus and the lunar Alps are examples.

How much of the Moon do the seas cover?

About 16 percent of the whole surface, and most of that is on the near side. The few seas on the far side are much smaller.

When are the craters on the Moon easiest to see?

At any phase other than full, by NASA's viewing guide. Shadows on the surface are more pronounced then, above all along the line between light and dark, and binoculars are enough to turn the gray and white into craters and mountain ridges.