The amount of turn between two lines or surfaces that meet at a point, usually measured in degrees.
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The Moon phase where the entire side facing Earth is lit up and visible.
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A massive collection of stars, gas, and dust held together by gravity.
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A force that pulls any two objects with mass toward each other.
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The Moon phase where the side facing Earth receives no direct sunlight, so it isn't visible from Earth.
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Describes something that is incomplete — only part of the whole.
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The changing shapes the Moon appears to have from Earth, caused by how much of its sunlit side we can see.
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The specific location of an object at a given time.
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A perfectly round, three-dimensional shape, like a ball.
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Describes the strongest tides of the month, which happen when the Sun, Earth, and Moon line up and their gravity combines.
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The regular rise and fall of ocean water levels, caused mainly by the Moon's gravity.
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A lean to one side, away from a straight vertical or horizontal line.
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An imaginary line through the center of an object that it spins around.
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Describes a solar eclipse where the Moon appears too small to fully cover the Sun, leaving a bright ring visible around its edge.
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The faint outer layer of the Sun's atmosphere, usually only visible during a total solar eclipse.
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A thin, curved sliver shape, seen when only a small part of the Moon's lit side faces Earth.
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Happening in a repeating pattern, over and over.
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An event where one object passes into the shadow of another, or blocks the view of another, in space.
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Pushes or pulls that can change an object's motion.
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Describes a Moon phase where more than half, but not all, of the visible side is lit.
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The attractive force between two objects due to their mass — the more mass or the closer the objects, the stronger it is.
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A rare type of solar eclipse that shifts between two other types as the Moon's shadow moves across Earth's curved surface.
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An event where Earth passes between the Sun and Moon, casting its shadow onto the Moon.
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The name of the galaxy that contains our solar system.
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Describes the weakest tides of the month, which happen when the Sun and Moon's gravity partly cancel each other out.
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The curved path one object follows as it travels around another due to gravity.
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The narrow strip of land where a solar eclipse appears completely total, with the Moon fully covering the Sun.
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The lighter, outer part of a shadow, where only some of a light source is blocked.
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Light bouncing off a surface — the Moon is visible because it does this to sunlight rather than producing its own light.
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One complete trip an object makes around another object.
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One complete spin an object makes around its own axis.
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An event where the Moon passes between the Sun and Earth, blocking some or all of the sunlight in certain areas.
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The stage of a solar eclipse when the Moon completely blocks the Sun's visible surface.
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The darkest, central part of a shadow, where a light source is completely blocked.
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Describes the Moon appearing to shrink night after night, from full toward new.
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Describes the Moon appearing to grow night after night, from new toward full.
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