Question

Why there is weather on Earth

rates for best explanatory answer!

Answer 1

Actually the weather on the earth is determined by the heating of earth by the rays of the sun. According to Kepler's I law of planetary motion. Earth revolves around the Sun in fixed elliptical orbits with sun at one of its foci. Hence the distance between the sun and the earth is variable.

The Kepler's II law of planetary motion again states that a planet sweeps equal areas in equal intervals of time. Now keep the areal velocity of the planet constant, a planet has to move slower when away from the sun than the velocity of the planet when nearer to the sun.

Hence, when nearer to the sun, earth travels faster, hence the time for the rays of the sun to heat the surface of the earth becomes lesser and as a result the surface of the earth is cooler, we experience winters.

When the earth is away from the sun it travels slower, hence giving the rays of the sun enough time to heat up the surface thus, we experience summers. In between summers and winters, we experience a time in which temperatures lie in the middle range or the earth is travelling at a velocity which is resulting in mid temperatures, we experience spring and autumn.

The distance between the earth and the sun does not actually has much impact on the temperatures but the velocity of earth round the sun decides the seasons.