Planetary Science: Investigation 3&4 Vocab Review

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Mare (maria)

Back

The dark surface of cooled magma in a flooded crater, often found on the Moon.

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First Quarter Moon

Back

The phase that occurs halfway between the new and full Moon, where half of the Moon is illuminated.

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Third Quarter Moon

Back

The phase that occurs halfway between the full and new Moon, where the opposite half of the Moon is illuminated compared to the First Quarter.

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Waxing

Back

The term used to describe the Moon getting bigger, as it moves from new Moon to full Moon.

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Rays

Back

The white lines that extend in all directions from some craters, formed by the ejection of material during impacts.

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Waning

Back

The term used to describe the Moon getting smaller, as it moves from full Moon to new Moon.

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Craters

Back

Depressions on the surface of a planet or moon caused by the impact of meteoroids.

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Phases of the Moon

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The different appearances of the Moon as seen from Earth, caused by the changing positions of the Moon, Earth, and Sun.

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Lunar Eclipse

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An event that occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to cover the Moon.

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Solar Eclipse

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An event that occurs when the Moon passes between the Sun and the Earth, blocking the Sun's light.