Moon Vocabulary

The Moon is Earth's natural satellite and has fascinated scientists and sky watchers for centuries with its phases, surface features, and influence on our planet. This free printable moon vocabulary list provides definitions for important terms and can be used for classroom learning, vocabulary review, and related puzzle activities.

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Printable moon vocabulary list and definitions
Moon Vocabulary

Moon Terms and Definitions

Word Definition
Astronaut A person trained to travel and work in space.
Craters Bowl-shaped holes on the Moon’s surface formed by impacts from meteoroids.
Crescent A phase of the Moon when only a small curved portion is illuminated.
Dust Fine powdery material that covers much of the Moon’s surface.
Eclipse An event that occurs when one celestial body moves into the shadow of another.
Far Side The half of the Moon that always faces away from Earth.
Full The phase when the entire visible side of the Moon is illuminated.
Gibbous A phase when more than half of the Moon’s surface is lit but it is not yet full.
Half A phase when half of the Moon’s visible surface is illuminated.
Lava Molten rock that once flowed across the Moon’s surface long ago.
Lunar Relating to the Moon.
Maria Large dark plains on the Moon formed by ancient lava flows.
Near Side The half of the Moon that always faces Earth.
New The phase when the Moon is between Earth and the Sun and cannot be seen from Earth.
Orbit The path an object follows as it moves around another object in space.
Phase The different shapes the Moon appears to have during its monthly cycle.
Quarter A phase when half of the Moon appears illuminated as it moves through its cycle.
Revolution The movement of one object as it travels around another.
Rocks Solid pieces of material found on the Moon’s surface.
Rotation The spinning of an object on its axis.
Satellite An object that orbits a planet; the Moon is Earth’s natural satellite.
Seas Another name for the Moon’s maria, which appear as dark plains.
Tides The regular rise and fall of ocean water influenced by the Moon’s gravity.
Umbra The darkest part of a shadow during an eclipse.
Waning Describes Moon phases when the illuminated portion is decreasing.
Waxing Describes Moon phases when the illuminated portion is increasing.

How to Use This Moon Vocabulary List

Students can review the terms before beginning an moon themed puzzle, refer to the definitions while completing an activity, or use the vocabulary list afterward for reinforcement. It is also useful for introducing new science words before a lesson on moon.

For younger students, you may want to choose a few key words from the list and discuss them together. Older students can use the full list as a study guide or as support while completing independent work.

Teaching Ideas

Try asking students to choose several vocabulary words and use each one in a sentence. They can also sort the terms.

Another simple activity is to have students cover the definitions and quiz themselves or a partner. This helps turn the list into an active vocabulary review instead of just a reference page.

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