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Key Terms Test 2.18

Test on 2.18.10

QuestionAnswer
Time of day when the Sun reaches its highest point in the sky for a given place on Earth. solar noon
Angle between lines originating from the eye of the observer toward two objects, such as a star- the Sun- and the horizon. angle of separation
The plane that extends from one's eye to te edge of Earth; the apparent connection between Earth and the sky. horizon
The apparent path of the Sun, planets, and Moon in the sky as seen from Earth; the plane along which the Sun, planets, Moon, and other solar system objects orbit. ecliptic
Either of two times of the year (fall or spring) during a planet's orbit when the north and south poles are equidistant from the Sun, causing day and night to be equal in length. equinox
Either of two times of the year during which the north pole (around June 21) or the south pole (around December 21) is most drected toward the Sun. solstice
A phase of the Moon in which the side of the Moon that faces Earth is not illuminated at all; occurs when the moon is between Earth and the Sun. new moon
Phase of the Moon in which a narrow strip of the Moon's lighted hemisphere is visible from Earth; shaped like a crescent; light is on the right; occurs after a new moon. waxing crescent
The phase of the Moon in which only the right half of the Moon's side that faces Earth is illuminated; occurs wen the Moon, Earth, and Sun form a 90 degree angle. first quarter
Phase of the Moon in which the lighted portion of the Moon's side that faces Earth is getting larger; occurs before a full moon. waxing gibbous
The phase of the Moon in which the entire side of the Moon that faces Earth is fully illuminated; occurs when Earth is between Moon and Sun. full moon
Phase of the Moon in which a narrow strip of the Moon's lighted hemisphere is visible from Earth; shaped like a crescent; light is on the left; occurs before a new moon. waning crescent
Phase of the Moon in which the lighted portion of the Moon's side that faces Earth is getting smaller; occurs after a full moon. waning gibbous
Created by: AMS
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