Why is the tropic of cancer and capricorn both 23.5 degrees N & S?
- 1 decade agoFavorite Answer
The earth is tilted at an angle of 23.5 degrees from vertical. So when it revolves around Sun depending on its position the sun would be in vertical position twice every year between the two tropics (however it would occur only once on the two tropics). Beyond this region the sun can never be vertical. Moreover if Earth had been vertical there would be no tropic of cancer or Capricorn. I am sending the link of the picture of earth's revolution and you may find more clarity when u view the same http://www.georgefcram.com/education/gr12.jpg.
Trust this clarifies.
- novangelisLv 71 decade ago
The Earth's axis is tilted 23.5 degrees relative to it's orbit around the Sun. The Sun can be directly overhead as far as 23.5 degrees north or south of the equator as a result.
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- Ernst SLv 51 decade ago
It is because the Earth's spin axis (pole to pole) is inclined 23.5° to the plane of Earth's yearly orbit around sun. So in the northern winter the sun is south of the equator, just vertically above -23.5° latitude at winter solstice, and in the northern summer the sun is north of the equator, just above 23.5° latitude. It's a geometrical given fact that the two angular distances from the equator are the same as the tilt angle of the spin axis in respect to the ecliptic.
- LisaLv 44 years ago
According to Wikipedia: The tropic of Cancer is called Tropic of Cancer because when it was named the sun was in the location of the constellation of Cancer (Latin for crab) in the sky at the June solstice. Check it out.