Where would an observer have to be in either the northern or southern hemisphere for the Sun to remain below the horizon for a 24-hour period for at least part of a year?
A) Nowhere, because the Sun is always visible at some time of the day everywhere on Earth
B) above about 66.5° latitude
C) above about 23.5° latitude
D) only at 90°, or exactly at the poles

Question

Quizplus · Accepted Answer

Above about 66.5° latitude in either the northern or southern hemisphere, regions experience polar night, where the Sun remains below the horizon for a 24-hour period during winter months. This phenomenon occurs in areas within the Arctic Circle (above approximately 66.5° North latitude) and the Antarctic Circle (below approximately 66.5° South latitude).

Where Would an Observer Have to Be in Either the Northern