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The different shapes of the moon you see from Earth


when an object in space comes between the sun and a third object, it casts a shadow on that object

solar eclipse

occurs when a new moon blocks your view of the sun


the very darkest part of the moon's shadow


The larger part of the shadow

lunar eclipse

occurs at a full moon when earth is directly between the moon and the sun


the rise and fall of ocean water that occurs every 12.5 hours or so

spring tide

Their combined forces produce a tide with the greatest difference between consecutive low and high tides

neap tide

a tide with the least difference between consecutive low and high tides


The moon's surface has dark, flat areas


moons surface is marked by large round pits


chunks of rock or dust from spate


a device built to observe distant objects by making them appear closer

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