Exercise 9 problems-part i the following questions are based on figure 9-2, showing earth-sun relations on june 21. june 21 tangent ray figure 9-2: earth-sun relations on june solstice. (adapted from mcknight and hess, physical geography 9th ed.) 1. what is the latitude of the vertical (direct) rays of the sun? 2. (a) what is the latitude of the tangent rays in the northern hemisphere? (b) what is the latitude of the tangent rays in the southern hemisphere? 3. why is the june solstice associated with the southern hemisphere winter? 4. noting the orientation of the circle of illumination on june 21, explain the following: (a) why does the equator receive equal day and night? (b) what happens to the length of day (the number of hours of daylight) as you move north of the equator? (c) within which range of latitudes in the northern hemisphere is 24 hours of day- light experienced? 49 copyright 02017 pearson education, inc.