Question

Why do equator experiences equal day and night

Answer 1

Because the world is a sphere thats axis is tilted. In the higher latitudes N and S the tilt when pointing away from the sun will reduce the daylight period, as in winter. When the axis is towards the sun the period of daylight will increase, as in Summer. The zone, between the Tropic of Cancer and the Tropic of Capricorn is called the Tropics. The Equator lies exactly half way beteeen the two tropics . On the Solstices the Sun will be directly over one of the tropics. On the Equinoxes the sun will be directly over the equator. The variance in the length of day at the Equator between the Equinox and the Solstice is very slight and so they get basicly 12 hrs of day and 12 hrs of night. However as you travel north and south and the angle of the sun to the horizon gets lower as the curve of our planet surface becomes more of an acute angle the length of the day gets longer and longer as we approach the summer solstice. Once we pass the solstice the day will get shorter and shorter as the sun moves towards the winter solstice when it will be overhead of the other tropic

Note: that all points on the planet no matter what latitude, will, over the course if a year recieve the exact same amount of daylight and darkness. For sake of argument twilight is darkness . This amounts to 4383 hrs of each…Everywhere on the planet.

source: quora

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