Write a short note on the revolution of earth.

1.	Write a short note on the revolution of earth.
Answer» The earth rotates on its own axis and also revolves around the sun. The movement of the earth around the sun on an imaginary path is called revolution. This imaginary path is called orbit. The orbit of the earth is oval or egg-shaped or elliptical in shape. Due to the non-circular orbit of the earth around the sun, its distance from the sun is not the same throughout the year. The earth revolves around the sun at the speed of 1760 km/min. With this speed, it takes 365 days for the earth to complete one revolution. This period is known as a year. Different seasons occur on earth due to the revolution of the earth. The tilt of the earth on its axis results into different seasons. It also results into long days and short nights or vice versa. The earth makes angle on its axis at 23.5° and on its orbit at 66.5°.

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