Earth Movements is all about the revolution around the sun, rotation on the axis, and seasonal changes we experience on the planet. Today we will get into detail about the Earth Movements and other aspects. 

Earth Rotations, Revolution, And Seasons

Earth’s movement is an interesting scientific phenomenon through which we can understand various aspects. We all know that Sun is in the center of the solar system and all the planets revolve around the sun on a particular axis. Every planet has different characteristics and revolution time. The Earth has two types of movements which are rotation and revolution. 

Rotation Of The Earth

Earth spins around its axis, an axis is a line that passes through the center of the earth and goes through both the North and south poles. This spinning around the axis is called Earth’s rotation. The axis of the earth makes an angle of 66 ½ degrees with its orbital plane. Because of the spherical shape of the earth, only half of the planet gets light from the sun at a time. 

When the first half receives the sunlight, we experience day, and the other half experiences the night. This division of day and night on the planet is called the Circle of Illumination. The earth takes 24 hours to complete one rotation around its axis. Recently some scientists have said that Earth’s rotation is slowing down and the length of the day increases by 1.8milli seconds per century. 

Revolution Of The

Just like the earth spins on its axis, the earth revolves around the sun in the orbit. This movement is called revolution. To complete one cycle around the sun, it takes 365 ¼ days. 

The 1/4th day is added every year to make one day and this additional day is included in February. That is why every fourth year, we have a leap year. Sun has immense gravitational power and it keeps the earth and other planets in orbit. Earth gets closest to the sun each year on January 3rd, and farthest on July 4th. 

Seasons 

Every year is divided into Summer, Winter, Spring, and Autumn seasons. We experience seasonal changes because of the position of the earth around the sun. We also experience the longest day on 21st June in the northern hemisphere, during this time the northern hemisphere is tilted towards the sun and the rays directly fall on the tropic of cancer. 

As the North Pole is inclined towards the sun, the places beyond the Arctic circle experience constant daylight for 6months. During the winter season, the nights are longer than the days, and it occurs on 22nd December. During this day, the tropic of Capricorn gets the direct sun rays because the south pole is tilted towards the sun. The whole earth experiences equal days and equal nights from 21st March and September 23rd. This phenomenon is called Equinox. The sun’s rays fall on the equator, and neither of the poles is tilted towards the sun. 

So this is all about Earth’s Movement and the seasons we experience. The variations in the length of daytime and nighttime change in every season because the earth’s revolution around the sun is in elliptical manner.

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