DAYLIGHTT, please hellpp!!?

Question

Okay, so im writing this essay on the reasons why the Daylight time varies throughout the year (summer - winter basically).. and ive searched and searched but i cant find hardly ANY information on it. All i keep getting is stuff on Daylight Savings Time.. and something called Martian Daylight Time?.. I seriously would appreciate anyyy help that anyone could give me. Must have sources however! Thanks sooo much in advance!!!

Answer 1

Below is a link to a loop of pictures from space...as it loads, you'll see a bright line running from upper left to lower right running across the pictures. That line is sunrise; you'll get about twelve time lapse pictures of sunrise moving across the US..........you'll see , for example that its sunrise in Boston and New York before it is in somewhere directly south...lets say the Bahamas.....which shows that daylight last longer the further north you go in the summer.
If you look at this picture on June 22 ( the longest day or the summer solstice) the angle of the "line of dawn" will be 22 degrees...which is what the Earths axis is tilted. On Sept 22 and March 22, the Equinoxes, (or equal night), the line would be straight up and down; on Dec 22, the shortest day the line would be tilted to the RIGHT, showing that the further north you go in the winter, the shorter the days are.

The Earth doesn't spin completely upright; the axis thru the poles we spin around is tilted 22 degrees off straight up and down.As a VERY simplified explanation, the Northern Hemisphere leans toward the sun in the summer, so more of it is exposed to sunlight longer.


Does this help?



http://www.ssd.noaa.gov/goes/east/eaus/loop-vis.html

Answer 2

It's all about the guy who created DST (Daylight Savings Time) actually wanting more time to play golf. While the tilt of the Earth is supposed to be the reason for the upsurdity called DST, the fact of the matter is time doesn't suddenly jump forward or back an hour. And what makes DST even more upsurd is the fact that it can be changed by politicians as to when it begins and ends, supposedly to save energy. But the idea may not actually save any energy as it is based on studies done years ago.

Answer 3

You might find the Wikipedia article below helpful. Basically, the Earth is always tilted, in regards to the plane in which it revolves around the Sun. In the northern hemisphere, it is summer when the north pole is angled toward the Sun. Daylight is longer during that time. Winter occurs when the north pole is angled away from the Sun, so that the northern hemisphere isn't lit by the Sun.

Answer 4

Hi. The Sun rises at different times but at noon it is always nearly the same at every location. If we did not have DST we would have the Sun rising earlier and earlier as summer approached and would waste many hours when the Sun rose at like 4:00 AM. DST(artificially) sets the clock ahead so we will get up earlier and not waste so much daylight.

Answer 5

Read the daylight savings time information. Its the same thing your asking. Our times change because of daylight savings time. It is why the days get longer in the summer and shorter in the winter.

Answer 6

It's all about the tilt of the earth and how it's angle creates seasons throughout the year. As you've probably learned in school, the earth is tilted in a 22.5 (or so) angle. As the earth aproaches the sun, the parts of the earth closest to the sun change, creating seasons.

Answer 7

DST was invented by Benjamin Franklin, who decided that more daylight would make it possible to farm for longer hours.

Answer 8

Here is a good site to start with. It talks about tilt and day length. When you use a search engine, try words like day length and earth tilt.
http://daphne.palomar.edu/jthorngren/tutorial.htm

Answer 9

http://www.lpi.usra.edu/education/skytellers/day_night/about.shtml

http://www.uwsp.edu/geo/faculty/ritter/geog101/uwsp_lectures/lecture_earth_sun_relations.html

http://www.bautforum.com/showthread.php?t=7668

http://www.ccmr.cornell.edu/education/ask/index.html?quid=1120

Good luck!