188 LABORATORY LESSONS IN GENERAL SCIENCE 



(h) When moving through the fourth quarter, and in 

 conjunction with the $un, i.e., in line with it. 



Now make a series of eight drawings to show these forms 

 (phases) of the moon. (Represent the outline form of the 

 moon as a circle, and blacken the unilluminated part.) 



(b) Questions on the Data Gathered 



1. When the moon was seen in the west in the early 

 evening, state (a) in what direction it was from the sun ; (b) 

 in what direction with respect to the sun its "horns" (cusps) 

 pointed ; (c) what was the shape of its east edge, and what 

 of its west edge ; (d) what was true of its distance from the 

 west horizon (and the sun) evening after evening at sunset ; 

 (e) its times of setting night by night; (/) the direction it 

 was from an observer when it appeared as a "half moon" 

 at sunset ; (g) how many degrees (or what fraction of a cir- 

 cle) the half moon is from the sun. 



2. Of the full moon, state (a) at what time it rises with 

 reference to the time of sunset; (b) what part of a whole 

 circle of the heavens it is from the sun ; (c) how long since 

 the moon was "new," and how long since it was a half 

 moon; (d) what is true of the times of rising night after 

 night ; (e) how long from one full moon to the next ; (/) 

 which quarter of the moon's revolution has been completed 

 when it is full. 



3. From observations of the moon made mornings before 

 daylight, state (a) the changes in phase morning after morn- 

 ing; (b) the direction of the moon from the sun; (c) its 

 distance from the sun morning by morning ; (d) what must 

 result. in the course of several davs as to the direction of 



