Which latitude corresponds to the Arctic Circle?

• A. 66.5 degrees N
• B. 23.5 degrees S
• C. 0 degrees
• D. 90 degrees S

Answer: (A)

The Arctic Circle is defined as the latitude 66.5 degrees North. This circle marks the southernmost point at which, for at least one day a year, there is a 24-hour period of continuous daylight in the summer and a corresponding 24-hour period of darkness in the winter. It is an important geographical marker that delineates the polar climate zone and significantly impacts the ecosystem, climate, and daylight patterns in the Arctic region. Other latitudes listed do not correspond to the Arctic Circle: 23.5 degrees South is related to the Tropic of Capricorn, 0 degrees represents the Equator, and 90 degrees South is the South Pole. Understanding the significance of the Arctic Circle helps in the study of global geography and climate.