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14 Cards in this Set
- Front
- Back
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Moon Phases |
The lunar phase or phase of the moon is the shape of the illuminated (sunlit) portion of theMoon as seen by an observer on Earth. |
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New Moon |
First phase of the moon. |
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Waning Crescent |
The moon is less than one-half illuminated by the sun but less than one quarter illuminated. Occurs when the moon's illumination is decreasing. |
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Third Quarter |
The moon is one-half illuminated by the sun. Occurs when the moon's illumination is decreasing. |
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Waning Gibbous |
The moon is more than one-half illuminated by the sun but not completely illuminated. Occurs when the moon's illumination is decreasing. |
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Full Moon |
The moon is totally visible in the sky. Except during a lunar eclipse. |
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Waxing Gibbous |
The moon is more than one-half illuminated by the sun but not completely illuminated. Occurs when the moon's illumination is increasing. |
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First Quarter |
The moon is one-half illuminated by the sun. Occurs when the moon's illumination is increasing. |
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Waxing Crescent |
The moon is less than one-half illuminated by the sun but less than one quarter illuminated. Occurs when the moon's illumination is increasing. |
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Lunar Eclipse |
An eclipse in which the moon appears darkened as it passes into the earth's shadow. |
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Solar Eclipse |
An eclipse in which the sun is obscured by the moon. |
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Earth's Tilt |
The Earth's axis is tilted 23.5 degrees away from the plane of the ecliptic. |
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Seasons |
Winter, Summer, Spring, Fall |
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Relation between lunar phases and tides. |
When the |
