Why do we have seasons?
819982
.The seasons result from the Earth's axis being tilted to its orbital plane; it deviates by an angle of approximately 23.5 degrees of arc.
798758
Seasons reasons \nUnless you live near the Earth's equator, you have no doubt noticed that the weather changes during the year: it is hotter during the Summer, colder in Winter, and somewhere in between during Spring and Fall. These are the seasons, a regular change in temperature, that repeat themselves every year, more or less regularly. \n\nWhat causes these changes? The Sun is our main source of heat, and since these changes are the same every year, it surely has something to do with the movement of the Earth around the Sun. If we get closer to a fire, we get hotter. Could it be then that the Earth gets closer to the Sun during Summer, and farther during Winter?  This idea seems at first to have some merit, until we remember that the seasons get reversed when we cross the equator: when it is Summer in the northern hemisphere, it is Winter in the southern one, and vice versa. And surely Argentina is at the same distance from the Sun as the USA! \n\nBesides, that the Earth's orbit is an ellipse, not a circle, so that at some times the Earth is closer to the Sun than at others; but this ellipse is very nearly a circle, and the relatively small differences in distance to the Sun cannot account for the changes in temperature. And to make things worse, the Earth is closer to the Sun during the northern hemisphere Winter! \n\nWhat, then, is, the cause of the seasons? \n\n\n\nIn the above animation, you can see the Earth during one full year (the animation then starts over again), as you would if you looked straight at it from the Sun. As you can see, the part of the Earth that is directly facing the sun changes with the time of the year. It is the northern half for a while, then moves south of the equator, only to move back to the north again. \n\nWhat causes this? The Earth rotates around an imaginary line passing through the poles, called the axis. This line forms an angle (called the tilt) of 23.4° with the perpendicular to the orbit of the Earth around the Sun. \n\n\n\n\nAs the Earth moves around the Sun, this axis stays always pointing in the same direction. This means that, during part of the year, the northern part of the Earth will lean more directly against the sun, and during other parts the southern part will. \n\n What has this to do with temperature? Well, when the northern hemisphere is leaning away from the sun, the rays coming from it hit this part of the Earth at a smaller angle than on other parts of the world. This means that the same amount of light is distributed over a larger surface, and therefore these places receive less heat than the others. The southern hemisphere is experiencing Summer, the northern hemisphere Winter. In half a year, the situation reverses, and it is now Winter in the southern hemisphere since that part of the earth is now leaning away from the sun. \n\nThe seasons are then the result of this tilt of the Earth's axis. If the tilt of the Earth's axis was 0° there would be no difference in how the rays from the sun hit its different regions, and there would be no seasons. \n\nNot all planets have the same kind of tilt as the Earth has: Uranus, for example, has a tilt of almost 98°. Its axis, then, lies almost on the plane of its orbit, and a day there lasts about as much as one year on Uranus: about 84 Earth-years.
901132
As a teacher, I think school should be year round.  I know plenty of people would disagree with me.  It can be so persuasive because students forget too much over the summer, etc. etc.  Benefits would be that every season you could have 2-3 week vacations!
898791
Because it's summer in the southern hemisphere
936201
Because in the summer, we lose a lot of sweat yes? =] so, this sweat has to be replaced with water from the body, meaning why we drink more in the summer, BUT, in the winter, we hardly sweat, meaning a build up of water, and bingo, out it comes, its all homeostasis, blood and body temperatures =], Basically, the water in our body cant escape  through the sweat glands, well, cus its winter, meaning it just builds up and puts everything out of balance. So we pee more. In the summer we dont pee asmuch cus water is lost through sweat.
454180
The earth rotates on an axis. In the summer, your hemisphere is tilted towards the sun. This results in longer days, and the sunlight hitting the earth more straight on.\n\nIn the winter, your hemisphere is tilted away from the sun. This results in shorter days, and the light hits the earth at a greater angle. More light is reflected off the atmosphere and off the earth itself, which contributes to less heat absorbed. Also, the same area of sunlight is spread over a greater area (like shining a torch sideways along the ground), this reduced density of sunlight on the earth also means less heat is absorbed.\n\nThe seasons are more distinct further from the equator where the tilt has more of an effect. On the equator, there are actually 2 longest and 2 shortest days each year and less distinct seasons, as when the earth is on either side of the sun (during autumn/spring seasons) the sun is directly above the equator, no matter which side of the sun the earth is on.
1160772
The seasons are not based on the orbit of the sun.  It is based on the tilt of the earth, which remains constant during it's orbit around the sun.  During half the orbit the northern hemisphere gets more sunlight hence it's in summer.  During the other half of the orbit the southern hemisphere recieves more sunlight therefore it's in summer.  So technically, yes there are two winters and summers, just in the opposite hemispheres.
427340
Indoor plants are fooled as to season because of lighting inside. Length of uninterupted night compared to day light is usually what triggers cycles in outdoor plants, not frost, etc.
1061028
Perhaps we find the weather so fascinating is because it's one of the few things we study that directly affects everyone, and it's another one of those things that we can't control. First of all, everyone is interested in weather because it'll affect their lives: what they do, how they dress, etc. If it rains the next day, plans may have to be canceled, or if it's sunny, plans can be made and added. Also, humans hate it when they can't control things, and we can't control weather. That's why we're constantly studying it so we can find patterns and stuff that'll help us feel more in control.
6196
The best season during the year has been proven to be spring because it has all seasons mixed into one. Early spring it still snows. Mid spring leaves are still falling. Late spring leaves start to return and tornado season starts. So there you have it.
418383
i like spring best cause in the winter it's too cold, in fall i have to rake leaves and bag them, and in the summer it's too hot. in spring, the air smells fresh after rain, and the grass turns green, and the trees grow leaves.
1181774
I have to agree with you, Winter is definitely the best season. Summer is the worst, it's too hot. Spring is okay, but it's always raining. Fall is pretty good, cool temperatures and nice colors, but Winter is definitely the best.
709370
For weather you need hot and cold, wind and rain, snow and ice, and sunshine. The earth has plenty of those, and our weather is a world-wide heat-engine driven by the sun, the rotation of the earth, and the tilt of the earth's rotation axis with respect to its orbital plane as it orbits the sun. Thus we get night and day (hot and cold), seasons (rain, snow and ice), and cloudy or sunny days (and cloudy nights too, but it's hard to see clouds at night; and the Moon provides us with somewhat "sunny" nights a few nights every month).\n\nThe moon has plenty of hot and cold and sunshine, so some "weathering" of its surface does occur over billions of years of time, due to heat expansion and cold contraction of "stuff" on its surface. But without wind (no atmosphere) and rain, snow, and ice (no water) there is nothing to cause real weather like we have here on earth.
986306
You actually have seasons. \n\nWinter can be very cold and more snow than usual.
215335
Because everyone wants to live here.  The climate is great.  You can swim in the ocean, a river, lakes.  You can go snow skiing or water skiing in the same area at different times of the year.  You can experience the excitement of a huge, diverse city like San Fran or drive a short distance and enjoy peace and quiet of a mountain.  We don't have tornadoes or hurricanes (just the VERY rare earthquake).  We don't grow big bugs...etc, etc, etc
1010212
Earth is closest to the Sun in early January (winter for those of us in the Northern Hemisphere, summer for those in the Southern Hemisphere) and farthest in early July.  Distance, however, has absolutely nothing to do with our seasons.  (If it did, the whole world would have the same seasons at the same time.)  Seasons are caused by Earth's tilt.  \n\nAnd NO, summer in the Northern Hemisphere is not caused by the Northern Hemisphere being *closer* to the Sun.  Think about it - if the varying distance of the entire Earth - several million miles - makes no difference in our seasons, how would the varying distance caused solely by our tilt - a few thousand miles - affect anything?  This is a common misconception, but it is wrong.\n\nSeasons are caused by the varying height of the Sun.  In the summer, the Sun gets higher in the sky during the day, heating your area of the Earth more effectively.  In winter, the Sun does not get very high, and so its energy is more spread out, and thus heats less effectively.
223010
well i like spring cause its not to hott not to cold..bu everyone else chose spring but i like summer\n\ni mean your off from school..its a HUGE vacation and you start another year after it...its like time you can relaxe you can stay up every night...hang out with your friends all day..its like the relaxation season..thats what i do..you have cold lemonade lay out side in the sun chill out..have pool parties or summer parties..crap like that  its just so much fun!