NCERT Solutions for Class 6 Social Science Geography Chapter 3
Social Science Class 6 Geography
Motions of the Earth 3
Important NCERT Questions Based on new NCERT Books for Session 2022-2023
Questions No: 2 Part: a
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(ii) Revolution
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The movement of Earth around the Sun is known as revolution. This fundamental astronomical phenomenon is a key aspect of our solar system’s dynamics. Earth’s revolution involves its orbit around the Sun, following an elliptical path that takes approximately 365.25 days to complete. This orbital motion is responsible for the changing seasons and the varying lengths of days and nights throughout the year.
The gravitational force between Earth and the Sun governs this orbital movement, as described by Kepler’s laws of planetary motion. Earth’s orbit is not a perfect circle but slightly elliptical, with the Sun at one of the two foci. The tilt of Earth’s axis, combined with its revolution, gives rise to the seasons, marking different points in the orbit as the Northern and Southern Hemispheres receive varying amounts of sunlight.
The revolution of Earth around the Sun is a fundamental concept in astronomy, forming the basis for our calendar systems and influencing various natural phenomena, including climate patterns, agricultural cycles, and the length of daylight. This cyclical motion is a critical aspect of Earth’s journey through space within the solar system.