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AC Earth Moon Sun Vocabulary

the fully shaded inner region of a shadow cast by an opaque object, especially the area on the earth or moon experiencing the total phase of an eclipse. Compare with penumbra.
having or representing the sun as the center, as in the accepted astronomical model of the solar system.
when the moon appears to get bigger - going from a thin crescent to a full moon.
the shadow cast by the earth or moon over an area experiencing a partial eclipse.
each of the twelve named periods into which a year is divided.
when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks (occults) the Sun.
having or representing the earth as the center, as in former astronomical systems. Compare with heliocentric.
a colorless, odorless, highly flammable gas, the chemical element of atomic number 1.
when the moon gets smaller - from a Full Moon to a crescent again.
a natural phenomenon by which all things with mass are brought toward (or gravitate toward) one another
an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
the process or result of joining two or more things together to form a single entity.
when the Moon passes directly behind Earth and into its shadow.
to cause to lean, incline, slope, or slant.
The tidal range is the vertical difference between the high tide and the succeeding low tide.
temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions.
each of the aspects of the moon or a planet, according to the amount of its illumination, especially the new moon, the first quarter, the full moon, and the last quarter.
The time taken by a planet to make one revolution around the sun.
a tide just after a new or full moon, when there is the greatest difference between high and low water.
diurnal tide neap tide Neap tides occur when the sun, earth, and moon form a right angle and the gravitational pull of the sun counteracts the pull of the moon.
the interval of light between two successive nights; the time between sunrise and sunset
the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about September 22 and March 20).