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A spinning motion is called a ___________________.
Rotation
The line on which an object rotates is the _________________ ______________.
rotation axis
The motion of one object around another is called ____________________.
revolution
The path an object follows as it moves around another object is an ______________.
orbit
A ___________________ is a day when Earth's rotation axis is the most toward or away from the Sun.
solstice
A ____________________ is a day when Earth's rotation axis is leaning along Earth's orbit, neither toward or away from the Sun.
equinox
Phases of the Moon during which more or the Moon's near side is lit each night are called _____________ ___________.
waxing phases
Phases of the Moon during which less of the Moon's near side is lit each night are called _____________ _________.
waning phases
The ________________ is the central, darker part of a shadow where light is totally blocked.
umbra
The ____________________ is the lighter part of a shadow where light is partially blocked.
penumbra
When the Moon's shadow appears on Earth's surface, a ____________ ______________ is occurring.
solar eclipse
