9. at nome, alaska (70 n), there is a midnight sun; or 24-hour daylight, from about a. march 22 to may 22 b. april 22 to june 22 c. may 22 to july 22 d. june 22 to august 22 10. at summer solstice, what is the solar altitude at hayward, ca given hayward's latitude of 37 n? b. 70 c.76.3 d.53 11. what parallel in the northern hemisphere is tangent to the circle of illumination at the time of the december solstice? a. the 45 parallel n b. the 23 parallel n c. the arctic circle d. the tropic of cancer 12. at the winter solstice in the northern hemisphere, what zone experiences 24 hours of darkness? a. northern hemisphere tropics b. the subtropics between 23 30n and 35 n c. the arctic, between 66 30'n and 90 n d. the subarctic between 55 n and 66 30'n e. only the north pole experiences 24 hours of 13. what parallel in the southern hemisphere is tangent to the circle of illumination on or about june 21? a. the 10 parallels b. the tropic of capricorn c. the equator d. the antarctic circle 14. at the june solstice, what zone in the southern hemisphere experiences 24 hours of darkness? a. the subtropics between 23 30's and 35 s b. the southern hemisphere midlatitudes between 35°s and 55 s c. the subantarctic between 55 s and 66 30's d. the antarctic between 66 30's and 90 s e. none of the above