HOW TO GET ACQUAINTED WITH CONSTELLATIONS 207 



The two second (1) stars on the side of the (2) (3) 



opposite the handle are called the (4) They show the direc- 

 tion to (5) Almost opposite the Big Dipper on the other 



side of the North Star is the (6) called (7) Polaris is 



the star at the end of the (8) of the (9) (10) If the 



handle to the Big Dipper points southeast at 6 P.M., it will point 



(11) at 9 P.M. and (12) . at 12 midnight. Polaris is a 



(13) magnitude star and Sirius and Arcturus are (14) 



magnitude stars. The Milky Way seems like a (15) (16) 



but in reality is chiefly a cluster composed of (17) of (18) . 



and is called a (19) of which our own (20) is a member. 



STORY TEST 



EVELYN LIKES TO STUDY THE STARS. HAS SHE PROFITED 

 BY HER STUDY? 



Read carefully and critically. List all the errors and suggest cor- 

 rections. 



The heavens are just full of stars grouped together in consterna- 

 tions. The largest of these is the Milky Way. Last night I saw 

 Orion. I recognized it by the 3-star belt and the 2 bright stars, 

 Altair and Arcturus. I also saw Procyon in the Little Bear, and 

 the brightest of all stars, Sirius, in the Great Bear. In the early 

 evening the pointers in the Big Dipper pointed northwest and 

 towards Polaris, but six hours later they pointed northeast and 

 away from Polaris. Cassiopeia appears to travel a complete circle 

 around the North Star every 12 hours, but stars farther from the 

 polar star like Sirius require 24 hours to make the circuit because 

 of the greater distance the star has to travel. If we stood over the 

 north pole in winter, Polaris would be directly overhead, but in 

 summer it would be 23^ degrees farther south. 



THE REVIEW SUMMARY 



We might study astronomy all our life and still know very little 

 about the stars. However, scientists have agreed that there are a 

 few general facts or generalizations that almost any one can learn 

 about these wonderful neighbors of ours in space. These gen- 

 eralizations are : 



