12 terms

Earth, Sun and Moon

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Axis
an imaginary line around which a sphere, like a planet, rotates
Day
the time between sunrise and sunset on Earth
Night
the time between sunset and sunrise on Earth
North Pole
one of the ends of an imaginary axle, called an axis, on which Earth rotates.
North Star
the star position directly over the Earth's North Pole
Orbit
to move or travel around an object in a curved path
Revolution
to travel around something else in a circular path, orbit
Rotation
turning around on an axis
Shadow
the dark area behind an object that blocks light
Sun
the star at the center of the solar system around which everything else orbits
Sunrise
the point between night and day. The time at which day first happens
Sunset
the point between day and night. The time at which night first happens
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