What phenomenon explains why seasons are opposite in the northern and southern hemisphere?
465258
Check out the wikipedia site...
736398
The tilt of the earth on its axis. When it is tiled one way, the sun hits more directly. When it is tilted the other way, it is more spread out.\n\nAgainst what you may think, the earth is actually closer to the sun in the winter than in the summer.
124801
that's only true in the northern hemisphere. it's because moss likes shade, and the north side of anything in the northern hemisphere is the shady side
4093
The "Theory Of Seasons" as first postulated by Marconi in 19th century Bangladesh states that there is a direct and proportional relationship between the seasons and the ambient temperature of the air in the northern latitudes. To wit: The season of winter will bring the lowest temperatures, whilst the season of summer will bring the warmest temperatures. Unproven for over 800 years, this theory was finally proven in August of 2005 with the help of the Super Computer at McMurdo Air Force base... using the programming language "C++" and an algorithm similar to that used in the game "Pong".
1059409
The tilt of the earths axis is what gives the northern and southern hemisphere different seasons. when the northern hemisphere is inclined towards the sun its summer here (June), when the southern hemisphere is inclined towards the sun its winter here (Dec). In between these times its hottest at the equator!\n\nThe tilt of the earths axis changes over geological time though, so the seasons will inevitably change.
169211
In the northern Hemisphere the days are longer during the summer months and shorter in the winter months.  The opposite is true in the Southern Hemisphere.  To get exactly length of the day I think you would need a computer program.  The calculation seems a bit complicated.
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.
880804
You have it! The Earth is tilted 23 degrees over relative to its orbit of the Sun. This spinning makes first the North Pole, and then the South Pole point towards the sun 6 months later. To our eyes, the Sun seems to rise and set in different spot each day. It is our point of view, together with the current location of Earth in its orbit.\n\n;-D Yes. This is what causes the seasons.
331139
I live in Alaska, so pay attention.  The earth is tilted; it doesn't spin at a right angle to the sun.  In summer, the north pole is tilted toward the sun, and as a result, the sun appears to circle the horizon, never actually setting.  In the winter, the opposite occurs.  The sun may peak over the southern horizon, but further north it never really rises.  In spring and fall, there is no difference from the rest of the U.S.
898791
Because it's summer in the southern hemisphere
450708
I guess it's time someone writes down a correct answer...\n\nThe earth rotate on its axis, which runs through the north and south poles.  It so happens that the earth's axis is not perfectly vertical.  Because the axis is at an angle, we spend half the year (it changes during the equinox) with the north pole (and hence the northern hemisphere) tilted towards the sun - this is summer.  We spend the other half of the year with the south pole tilted towards the sun (hence, the northern hemisphere is tilted away from the sun) - this is the winter.  Now I will leave it up to you to think about why this should make the summer days longer than the winter days.  Try this:  grab a basketball (better yet, a globe), turn off all the lights, point a flashlight at it and spin it with the axis rotated towards the light and with the axis rotated away from the light.  Follow a single point on the top half of the ball and see if you can make sense why this point stays in the light longer when the axis is pointed towards the light versus when the axis is pointed away from the light... \n\nIt's a nice point to make that in the southern hemisphere (Australia, Chile, South Africa, etc.) the days are longer in the winter and shorter in the summer.  If you think for a moment, it shouldn't be too hard to figure out why...
182670
4 seasons to a year.  A season in the common sense is defeind by tepreature.  but a season in the technical sense is defined by the earth's tilt relative to your hemisphere.  They usually don't match; spring and fall are often too short.\n\nThe equinoxi are at June 21 and December 21; they mark the start of winter and summer in the northern hemisphere.  They are reversed in the southern hemisphere.  SPring and fall are halfway in between.
478834
Because you live in the Southern Hemisphere...In the Northern Hemisphere it goes the other way. Look up the term 'Coriolis effect' for more info.
424090
umm. where at? because the eastern and western hemisphere's experience opposite seasons.\n\npablodiablo1981 is correct, i made a mistake. it is southern and northern.
1091939
Like night and day, the northern half of the planet has the opposite season from the southern half. And along the equitor there's really not much season at all!\n\nOn the other side of the planet from you (east and west)  it's 12 hours difference in time, yes? So if it's noon where you are then it's midnight there.\n\nAnd on the opposite side of the planet from you (north and south) the weather is like six months difference ... middle of the summer for you is middle of the winter there.\n\nIt's all about where the sun is, as earth spins (day/night) and orbits around (summer/winter).
638263
the earth is spinning on a tilted axis (23.5 degrees), therefor sunlight is not equally dispersed, causing seasons... look up seasons on wikipedia and it will give an explanation i'm sure
614189
when the location that you live in is closes to the sun, that is when you have summer. when it's farthest away, then you have winter, and so forth and so on. also, you should probably know that when it is winter in the northern hemisphere, it's summer in the southern hemisphere, and vice versa.