why days and nights are equal at equator?

Answer 1

I was there at the northern summer solstice a couple years ago and sure enough the days and nights are still equal.

If the earth weren't tilted in it's axis, the same would be true in the extreme north and south hemishperes of the earth. When the tilt puts either hemisphere pointed more toward the sun, the equatorial area is still getting the same amount of daylight.

It helps to look at a globe to see why this is true.

Answer 2

Earth has a swing, that makes and accounts for different length of day and night every day, it is repeated every year approximately (within few seconds to within 1 day, leap year). This is call the tilt of the earth and it is 23 and 1/2 degree through thru the equator.

But there are some points on the earth that are not affected by it, a line ( curve ) through these point is called Equator, it means equal day and night.

The same swings gives us summers on the south side of the equatorial line, when there is winter on the north side of the line.

If there was no tilt then we would have same season in both the hemispheres; and days and nights would be equal, every day. All over the world, no midnight sun phenomenon any where in the world.

Answer 3

Because of the tilt of the earth's axis,days and nights will not be equal even at the equator except on two days in a year.On 21st March and on 23rd September,when the sun is directly over the equator, the day time and night time will be equal .Because on these days the sun will be exactly overhead at 12 noon.On other days ,it will not be overhead at 12 noon.This you can verify by the fact that a vertical pole will have a shadow even at 12 noon.
If there is no tilt in the earth's axis and is perpendicular to the plane of revolution of the earth around the sun,day time and night time would be equal throughout the year on the earth's surface.

Answer 4

In all days of the year the diurnal paths of the sun are parallel to the equator which coincides with the prime vertical. Therefore the horizon bisects the diurnal paths of the sun so that the sun is as long above the horizon as it is below it on all days.

Therefore, the duration of day and night are equal, each equal to 12 hours on days of the year.

The sun passes through the zenith on two days of the year viz March 21st and September 23rd.

The meridian zenith distance of the sun varies from ─ω to + ω

Answer 5

Days & nights are equal. That's why it is called equator.

Answer 6

Theoretically conversing, simply by fact the "Circle of illumination" constantly cuts the Equator into 2 equivalent halves, The Equator will theoretically have equivalent lengths of days/nights, all 12 months long. (protecting impact of different components consistent)

Answer 7

Because there is no north or south ANGLE to throw off the timing. The north pole could have 6 months staight daytime or night.

Answer 8

I don't think that they are. The earth rotates, but it also tilts, so at some point a day, or night, will be either longer or shorter.

Answer 9

Type in "equinox" in the Internet and you will receive an explicit answer to this question.

Answer 10

because of the tiltation/inclination of the earth