what causes earths seasons?
462133
1. earth's tilt\n2. earth rotation\n3. earth revolution
404348
Solstices are determined by the relationship of the earth to the sun, so yes.
614606
The earth is tilted on it's axis, roughly 23.3 degrees.  So during the summer your hemisphere of the earth is pointed toward the sun.  So you are able to enjoy a longer period of sunlight.  This is also the reason behind the lessened sunlight in winter.  Now, summer begins on the Summer Solstace, which is when the sun's rays are directly over either the tropic of capricorn or the tropic of cancer depending on which hemisphere you live.  This increase in sunlight is because the tilt of earth is placing more direct sunlight on your half of the earth.  So it takes longer for the earth to face away from the sun.
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.
20345
Taken from http://en.wikipedia.org/wiki/Seasons\n\nThe ultimate cause of the seasons is the fact that the Earth's axis is not perpendicular to its orbital plane; it deviates by an angle of approximately 23.5 degrees of arc. Thus, at any given time during the summer or winter, one part of the planet is more directly exposed to the rays of the Sun. This exposure alternates as the Earth revolves in its orbit. At any given time, regardless of season, the northern and southern hemispheres experience opposite seasons.\n\nSeasonal weather fluctuations also depend on factors such as proximity to oceans or other large bodies of water, currents in those oceans, El Niño/ENSO and other oceanic cycles, and prevailing winds.\n\nIn the temperate and polar regions, seasons are marked by changes in the amount of sunlight, which in turn often cause cycles of dormancy in plants and hibernation in animals. These effects vary with latitude, and with proximity to bodies of water. For example, the South Pole is in the middle of the continent of Antarctica, and therefore a considerable distance from the moderating influence of the southern oceans. The North Pole is in the Arctic Ocean, and thus its temperature extremes are buffered by the presence of all that water. The result is that the South Pole is consistently colder during the southern winter than the North Pole during the northern winter.\n\nThe cycle of seasons in the polar and temperate zones of one hemisphere is opposite to that in the other. When it is summer in the Northern hemisphere, it is winter in the Southern hemisphere, and vice versa, and when it is spring in the Northern hemisphere it is autumn in the Southern hemisphere, and vice versa.\n\nIn the tropics, there is no noticeable change in the amount of sunlight. However, many regions (famously the northern Indian Ocean) are subject to monsoon rain and wind cycles. Curiously, a study of temperature records over the past 300 years (David Thompson, Science, April 1995) shows that the climatic seasons, and thus the seasonal year, are governed by the anomalistic year rather than the tropical year.
650556
First the ocean tides would lessen by about 66% since the Moon effects the gravity of earth.  The sun causes the other portion of tides, so tiedds would continue, just a lesser amount.  After about 1,000 years the season would change because the moon keeps the earth's rotation axis and the plane of the orbit of earth within a narrow range.  That range would widen and there would be a more significant difference in the climate between summer and winter.  Many animals use the sequence of the moon for their life cycles (laying of eggs of the turtle, for instance).  So, these animals' life cycles would change, possibly causing extinction.  Additionally the moon provides nighttime light which many animals depend on for hunting as well as farmers depend on for harvesting.
659353
The Earth rotates counter-clockwise when viewed from above the North Pole. \n\nThe rotation causes a centrifugal force, which causes the bulge of the equator, and a coriolis force, which is important in determining the flow of jet streams in the atmosphere and currents in the ocean.
375210
Mountains, bodies of water and seasonal tilt in the earths axis. That's the whole 9 yeards.
268784
The sun never stops shining.  The earths rotation brings us into the shadow of the earth for part of every day.  If you wer far enough north in the summer or south in the winter then the sun would never dip below the horizon while it appeared to circle around the sky.
1063787
"Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface. It occurs at all scales, from local breezes generated by heating of land surfaces and lasting tens of minutes to global winds resulting from solar heating of the Earth. The two major influences on the atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect)."
640598
Tides are caused by factors such as winds, earths rotation and the sun and the moon's gravitational pull. All of them combined sometimes.\n\nexceptional cases such as tsunami-when sections of plates of earth's crust undergo changes such as shift, quakes, displacements
43990
sunspots \n\nDark spots on the surface of the sun caused by magnetic storms. \n\n\nThe number of sunspots goes through a maximum and minimum about every eleven years. During periods of maximum sunspots, the elementary particles associated with the spots cause disturbances in the atmosphere of the Earth and interfere with radio and television communication.
2650
The earth radiates heat off of it until the sun is high enough to begin heating it again. The same principle works in the winter, the winter solstice is in December but the coldest winter weather usually occurs six weeks later after the sun is climbing higher in the sky.
37127
Tilting the earth more on its axis (as tilting it 40 degrees would do) would make the seasons more extreme in the middle latitudes. Summers would be hotter, because the sunlight would be hitting them more directly. Winters would be colder, because the sunlight would be hitting them less directly.
739091
because the earth rotates on an axis
357294
The Earth is surrounded by atmosphere, which is made up of many greenhouse gases. The Earths temperature\n      depends on the solar constant.\n      The Earths surface absorbs heat from the sun and re-radiates it back out to space with the help of clouds, snow,\n      atmosphere dust and sea surfaces, the rest is absorbed by other gases and aerosols, examples of these is the\n      gases from power stations and volcanoes which can be liquid or dust, some solar radiation does not reach\n      space this remains trapped in the atmosphere by greenhouse gases. \n      The temperature of the Earth has changed and is continuing to do so with the help of human activity in rising \n      Co2 levels, from 1850-1996 Co2 rose from 285 p.p.m to 360 p.p.m a 0.7ºc rise in surface temperature.\n      We know how trees and plants are vital to us as they convert Co2 into oxygen to help us breathe, but industry\n      will continue to cut and burn down forests allowing more Co2 into the air, with this decrease in vegetation this\n      means more Co2 will remain in the atmosphere and with the burning of fossil fuels we are also producing more \n      Co2, causing the Earths temperature to warm up.\n      Clouds also play a role in the surface temperature; they absorb radiation this increasing the amount of infrared\n      radiation that is emitted by the atmosphere depending on their altitude and thickness, a cloud is formed when\n      water vapor condenses.
51076
Also, toxic gases can burst holes through the protective envelope known as atmosphere, allowing ultraviolet light to come directly to the earth. This is responsible for the increase in skin cancers, and it can alter weather, as well as trigger an unscheduled Ice-Age...