Moon Vocabulary Word Search


There are several moons in the universe, but there is only one Moon or Luna. Earth’s satellite holds a place in everyone’s heart and is generally the first astronomical body people want to study. This Moon vocabulary word search introduces 33 glossary terms associated with our closest celestial neighbor.

Moon Vocabulary Word Search

This word search fits on a standard  8.5″ x 11″ sheet of paper and scales down nicely to A4 paper. Use the provided PDF link for best results in printing.

Download links: [Word Search Image] | [Word Search PDF]

If you need a little help finding one or all of the vocabulary terms, take a peek at the solved version of the puzzle.

Download links: [Solution Image] | [Solution PDF]

Word searches are a load of fun. Be sure to check out our other science-related word search puzzles.

Moon Vocabulary Glossary

These are the vocabulary terms found in the Moon Word Search.

Albedo: A measure of how bright an object is or how much sunlight it reflects.

Apogee: Point of the Moon’s orbit when it is farthest from Earth.

Basalt: Volcanic rock found on the Earth and Moon formed by rapidly cooling lava.

Conjunction: The time when at least two celestial bodies appear closest in the sky.

Crater: A depression formed by the impact of a meteor.

Crescent: When the Moon appears as a thin, curved slice just before or after a New Moon.

Earthshine: Sunlight reflected back toward the Moon from Earth.

Ephemeris: Astronomical text that lists the position of celestial bodies at a given time.

Far Side: The side of the Moon that is not visible from Earth.

First Quarter: When the right half of the Moon is illuminated.

Full: When the entire Moon is illuminated by the Sun.

Gibbous: Phase of the Moon after First Quarter and after Full Moon when the Moon is nearly full.

Lacus: Portions of the Moon’s surface that look like lakes.

Librations: Rocking motion of the Moon as it orbits the Earth.

Limb: Outer edge of celestial body.

Lunar Rays: Lines on the surface from mass ejected by a meteor impact.

Magnitude: The brightness of a celestial object. The lower the number, the brighter the object.

Mare: A plain of basalt on the Moon formed by now-extinct volcanoes.

New Moon: When the Moon is on the same side of Earth as the Sun, so it isn’t visible in the sky.

Palus: Lunar feature that resembles a dark plain or swamp.

Perigee: The point where the Moon’s orbit is closest to the Earth.

Phases: The different illumination of the Moon depending on its position relative to the Earth and Sun.

Last Quarter: When the left half of the Moon is illuminated.

Lunar Eclipse: When the full Moon enters Earth’s shadow.

Opposition: When the Moon or a planet is on the opposite side of the sky as the Sun.

Penumbra: Shadow cast by a celestial object that only blocks part of the light.

Rille: Groove in the lunar surface that resembles a canyon.

Satellite: An object that orbits a celestial body, like the Moon orbits the Earth.

Selenography: Study of the topology and features of the Moon.

Tektites: Natural glass found on the Earth and Moon created by meteor impacts.

Terminator: The line between day and night that can be seen during the phases of the Moon.

Tides: Rising and falling of ocean levels on Earth from the gravitational forces of the Sun and Moon.

Umbra: Shadow cast by a celestial object that blocks illumination.

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