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rotation
object spinning on its axis
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revolution
object revolving around another object
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solar eclipse
when Moon comes directly between the Earth and Sun, Moon casts a shadow on part of Earth
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lunar eclipse
Earth comes directly between the Moon and Sun, casts shadow on Moon
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Moon Phase Order:
new moon, waxing cresent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning cresent
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solar noon:
Sun is at its highest point in sky
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umbra
dark inner portion of a shadow
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penumbra
lighter, outer portion of a shadow
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ecliptic
sun's apparent path across the sky
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Polaris
name of star that the northern end of Earth's axis is always on
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measure of degrees of the tilt of Earth's axis
23.5
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astronomical unit
distance of Earth to Sun (150million km)
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force that pulls Moon towards Earth
gravity
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what causes day and night
Earth's rotation because when it spins, it will turn away from the Sun and come back in 24 hours
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totality
when the body casting a shadow completely covers a smaller body or when a smaller body's shadow completely covers a smaller body
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