answersLogoWhite

0


Top Answer
User Avatar
Wiki User
Answered 2006-09-07 13:36:03

Twice a year, halfway between summer and winter, the Sun rises exactly in the east , and sets exactly in the west (well, nearly exactly, in both cases). We now know that on the days when this happen, day and night are very nearly equal in length, and that time of year is therefore called "equinox." One equinox happens in the fall ("autumnal equinox") and one in the spring ("vernal equinox," "ver" is Latin for spring). As fall advances towards winter, the location of sunrise moves south, as does the location of sunset. The steepness of the curve traced by the Sun does not change, nor does the rate ("speed") with which the Sun appears to move along it, but the length of the curve changes, it becomes shorter. Around December 21 --the "winter solstice" halfway between the equinox dates (typically, September 23 and March 21) sunrise and sunset are as far south as they can go (at any one location). As a result, the Sun has its shortest path for the year, the day is at its shortest and night is at its longest. Other days of that season are short, too, which is one reason for the colder weather in winter. In summer, the Sun's path is longest, and so are the days. In winter, the Sun's path is shortest, and so are the days. After that the points of sunrise and sunset migrate northward again, and days get longer. This migration continues past equinox (when it is at its fastest), and the Sun crosses the horizon furthest northwards around June 21, the "summer solstice" (celebrated in some cultures as "midsummer day"), longest day of the year with the shortest night. After that days get shorter again as sunset and sunrise migrate south again. The long days of summer, of course, match the warmer summer weather.

012
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0
User Avatar

Your Answer

Loading...
Still have questions?

Related Questions

When geese migrate?

They migrate to Finland before the summer and migrate away from Finland after the summer.


In which direction did humans first migrate?

The direction were the humans first migrate was in asia.


When do crows migrate?

crows migrate in winter and summer


When do eagles migrate?

in summer


Do alligators migrate in summer?

no


When do dolphins migrate?

During migrating season, dolphins usually migrate during the end of Summer, or in the middle of Summer.


When do whales migrate?

Whales migrate to the north during Summer months.


Do whales migrate each season?

no,they migrate each summer only


If a bird doesn't migrate where does it live in the winter?

If it does not migrate it stays where it was in the summer.


Do harp seals migrate?

yes harp seals migrate they migrate southin the autum and migrate noth in the summer good luck


When do blue whales migrate?

in the summer


Do moose migrate in summer?

no how dumb are you??


What time of year do birds migrate?

They migrate south in the winter and north in the summer.


Where does a polar bear migrate?

They migrate where the weather feels nice and warm for the winter, but then in the summer, they migrate back to the ice, which is their home.


What direction do zebras migrate?

North Africa.


Where do robins migrate during summer?

they are to hot


When does cuckoo migrate to India?

Summer Season


When does yellow wagtail migrate to India?

in summer.


Where do birds migrate during the summer?

africa


Do dingoes wild dogs migrate or hibernate?

migrate because Austrailia gets really really hot in summer so they migrate


Do swallows migrate?

Yes, Swallows migrate to Europe in the summer, then flying back to Africa to winter


What season does some birds migrate?

summer season


Where do blue whales migrate in the summer?

Costa Rica!


Do kingfishers migrate?

There are kingfishers that migrate during the winter. They can be found in North America in the summer and South America in the winter.


Why does a praying mantis migrate?

praying mantids do not migrate if a mantid finds a shrub or plant he likes then that is his home for the summer.