Describe the relationship between the Circle of Illumination, 66.5 degrees north latitude (the Arctic Circle), and 66.5 degrees south latitude (the Antarctic Circle) on the June solstice.
The circle of illumination is the line that separates the Earth to create equal parts of day and night. It passes through the poles and allows the entire Earth to have an equal amount of time spent during the daylight and nighttime hours. The circle of illumination divides the Earth in exactly half.
On the June solstice, the circle of illumination is tangent to the Arctic Circle (66.5° N) and the region above this latitude receives 24 hours of daylight. The Arctic Circle is in 24 hours of darkness during the December solstice.
4) The circle of illumination bisects the equator leaving the equator with 12 hours of daylight and 12 hours of darkness 5) As we move North of the equator, the portion of each parallel in daylight increases and day length increases 5) As we move South of the equator, the opposite happens 6) The circle of illumination reaches beyond the north ...
At vernal equinox, there is uniform illumination of Earth's surface (i.e., 12 hrs of daylight everywhere except exactly at the poles which are both illuminated). At summer solstice (approximately June 21), there is perpetual sunlight within the Arctic Circle (i.e., the Arctic Circle is fully illuminated).
During the June solstice the Earth's North Pole is tilted 23.5 degrees towards the Sun relative to the circle of illumination. This phenomenon keeps all places above a latitude of 66.5 degrees N in 24 hours of sunlight, while locations below a latitude of 66.5 degrees S are in darkness.
Day length and seasons. ... The circle of illumination is the imaginary circle that separate day from night. Figure 2.14 Variations in day length. Figure 2.14 shows two extreme cases, the December and June solstices. Note during December that more of a given latitude in the Southern hemisphere is exposed to the Sun.
The circle of illumination is the division between day and night over the earth. The circle of illumination bisects (cuts in half) all latitudes on the spring and autumnal equinoxes. At this time, all places have equal day length (12 hours). The circle of illumination always bisects the equator (0 degrees latitude).
Start studying Geography Chapter 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. ... June Solstice. Equinox. time when subsolar point falls on equator and circle of illumination passes through both poles. Winter solstic. solstice occurring on December 21 or 22, when the subsolar
Arctic Circle: The sun makes the briefest of appearances at noon, peeking at the horizon and then instantaneously disappearing. All areas north of the Arctic Circle are dark on the June Solstice. Tropic of Cancer: The sun is low in the sky, at 47 degrees from the zenith (23.5 plus 23.5) at noon. Equator: The sun is 23.5 degrees from zenith at noon.