Teacher's Leaflet. 825 



(3). Is the sun equally hot all day? Why does it seem hotter to 

 us at one time of the day than another? 



(4). At what hour does the sun rise and set on the first of the follow- 

 ing months : February, March, April, May and June. 



(5). Which is the shortest day of the year and how long is it? 



(6). Which is the longest day of the year and how many hours and 

 minutes are there in it? 



(7). What day of the year is the sun nearest a point directly over our 

 head at midday? 



(8). Which day of the year is the sun farthest from the point directly 

 above our heads? Explain why this is so. 



(9). Standing in a certain place mark by some building, tree or other 

 object just where the sun rises in the east and sets in the west on the 

 first of February. Observe the rising and setting of the sun from the 

 same place on the first day of March and again on the first of April. 

 Does it rise and set in the same place always or does it move north or 

 southward ? 



(10). Is the sun farthest south at the shortest day of the year? "If so 

 is it farthest north at the longest day of the year? 



(11). At what time of the year does the sun rise due east? 



(12). The sun is so much larger than the earth that its force of gravity 

 is twenty-seven times that of the earth. How much would your watch 

 weigh if you were living on the sun? How much would you yourself 

 weigh if you were there? 



Topics for English lesson. — The size and distance of the sun ; the heat 

 of the sun and its efifect upon the earth ; what we know about the sun 

 spots ; our path around the sun. 



Experiment. — A shadow stick. Place a peg two or three inches high 



upright in a board and place the board lengthwise on the sill of a south 



window or where it will get 



the south light. Note the 



length cast by the shadow of 



the peg during a sunny day 



and draw a line with pencil or 



chalk outlining the tip of the 

 , , J- ^1 ^- 1 r A Shadow Stick 



shadow of the stick from 9 



a. m. to 4 p. m. Make a similar outline a month later and again a month 



later and note whether the shadow traces the same line during each of 



these days of observation. Note especially the length of the ghadow 



at noon. 



