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Unit 1 Vocab (Astronomy)

Across
Period of month where illuminated portion of moon is increasing
Stronger than normal tide, occurs during full or new moons
Special kind of rotation in which the time it takes for one complete rotation is equal to time for one complete orbit (the Moon does this!)
Stars that do not set below the horizon, instead appear to circle the celestial north pole
All of moon’s illuminated surface is visible
Shadow cast by moon on Earth (Sun appears blocked out by moon)
Weaker than normal tide, occurs during quarter moons
Sun appears at its most northern or southern positions
A line that passes from due north on the horizon, directly overhead through the zenith, to due south on the opposite horizon.
The point directly over an observer’s head, no matter where he or she is located on the earth.
Point in the year when Sun crosses celestial equator. Equal night and day.
Down
Period of month where illuminated portion of moon is decreasing
¾ of moon’s visible surface is illuminated
Shadow cast by Earth on moon
Small sliver of illuminated moon is visible
The wobble of the Earth as it spins on its axis, causing the eventual change in the direction the poles are pointing
Half of the moon’s visible surface is illuminated
The angle, in degrees, of an object above the horizon.
The apparent path that the sun takes in front of the stars on a yearly basis.
The angle, in degrees, of an object around the horizon (like the labels on a compass)
No illuminated portion of moon is visible
The band of constellations centered on the ecliptic path