Phases and Eclipses

Front

Phases Noun

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[fay-zez]

Back

Phases

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The different shapes of the moon as seen from Earth, caused by the moon's motion around our planet.

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Example: The image shows the moon's phases as it orbits Earth, illustrating how its shape changes.

Front

Maria Noun

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[mar-ee-uh]

Back

Maria

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The dark-colored, low, flat plains on the moon's surface that were formed by ancient volcanic lava flows.

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Example: The image shows labeled maria on the moon, illustrating the dark plains formed by ancient volcanic lava flows.

Front

Craters Noun

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[kray-terz]

Back

Craters

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Large, bowl-shaped depressions on the surface of a celestial body, typically caused by the impact of a meteorite.

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Example: The image shows labeled craters on the moon, helping students identify and learn about their locations and significance.

Front

Near side Noun

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[neer side]

Back

Near side

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The hemisphere of the moon that is permanently turned toward and visible from Earth due to synchronous rotation.

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Example: The image shows the near side of the moon with labeled features visible from Earth.

Front

Far side Noun

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[far side]

Back

Far side

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The hemisphere of the moon that always faces away from Earth and is not visible from our planet.

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Example: The image shows the far side of the moon facing away from Earth, illustrating the concept of the moon's hidden hemisphere.

Front

Rotate Verb

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[roh-tayt]

Back

Rotate

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The action of a celestial body spinning or turning around its own central line, known as an axis.

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Example: Earth's rotation around its axis causes day and night.

Front

Revolve Verb

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[ri-volv]

Back

Revolve

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The action of one celestial body moving in a curved path or orbit around another, more massive object.

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Example: The Earth revolves around the Sun, causing seasons to change.

Front

Axis Noun

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[ak-sis]

Back

Axis

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An imaginary straight line passing through the center of a celestial body, around which the body spins or rotates.

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Example: Earth's rotation axis divides the planet into day and night, illustrating how it spins around this imaginary line.

Front

Orbit Noun

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[or-bit]

Back

Orbit

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The curved, repeating path that a celestial object takes as it revolves around another object in space.

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Example: The image shows Earth's orbit around the Sun, illustrating the curved path Earth takes as it revolves.

Front

New Moon Noun

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[noo moon]

Back

New Moon

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The lunar phase when the moon is between the sun and Earth, making its sunlit side face away from us.

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Example: The image shows the New Moon phase when the moon is between the sun and Earth, and its sunlit side faces away from us.