Orientation of tilted Earth towards Sun creates the seasons on EarthSun is the centre of our solar system and many planets revolve around the Sun. It is very massive in size and all the planets which are relatively quite smaller than it are bound to it by its gravity and are attached to it by that invisible force of gravity. Earth is one of these planets and it revolves around Sun completing one revolution in one year time. The path in which the Earth orbits the Sun is almost circular and for all practical purposes we can take the distance between Sun and Earth almost same throughout the year. We have different seasons on Earth like winter, summer, autumn, and spring. The question here arises that if the Earth is at an almost same distance from the Sun then how the seasons are changing making temperatures more or less. This is explained by the fact that Earth is actually tilted along its axis and due to this its orientation towards Sun changes through the year. When the North hemisphere is more exposed towards Sun then we get summer there while when the southern hemisphere is more exposed to sunlight, we get summer in it. It is very interesting to observe that due to this tilting when it is summer in Europe, North America, and Asia, we have winter in Australia and South Africa. The reverse is also true that when we have summer in Australia and South Africa, we have winter in Europe, North America, and Asia. So, the various seasons and their timings can be explained based on the orientation of the tilted Earth towards Sun while completing its yearly journey around Sun.
This is my entry for the month end topic based contest on 'orientation'.