Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.
A) declination
B) right ascension
C) perihelion
D) equatorial system

Question

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.
A) declination 
B) right ascension 
C) perihelion 
D) equatorial system

Quizplus · Accepted Answer

A, B, and D are all related to astronomy and celestial coordinates. Declination and right ascension are used to locate stars on the celestial sphere in the equatorial coordinate system. Equatorial system is a coordinate system used to locate objects in the sky. However, perihelion refers to the point in the orbit of a planet or comet where it is closest to the sun, which is not directly related to celestial coordinates.