global warming facts

Green house effect and global warming

Global warming

volcanic eruptions causing climatic changes

ocean currents

Earth's tilt causing seasonal changes

Earth tilt

Moreover the position of the earth’s tilting relative to the sun, gave us seasonal changes of winter, summer, autumn and spring on the earth. The scientific researches proved that the earth completes its one rotation in 365 days and it is skewed at an angle of 23.5° to the perpendicular to its orbital path.

For about one half of the year, in the summers, the northern hemisphere faces the sun. While in the other half, in winters, the earth tilted away from the sun. Without these inclinations of the earth we cannot see the variations in the seasons that we have and the same season remains throughout the year.

These changes in the rotation of the earth can affect the severity of the seasons. If it is more tilted towards the sun then it means hotter summers and colder winters. And less tilt results in moderate summers and moderate winters. The orbit of the earth is basically oval shaped. It means that the earth would take more than a year to cover the distance around the sun.

We usually assume that the earth’s orbit remains fixed and does not change. But in fact, it is not like that: the axis moves, But this movement is so slow that it only covers half-degree in the whole century. The changes in the rotation of the earth known as ‘precession’ lead to climatic changes around the globe.