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Rotation of Earth Video Lecture | Geography for UPSC CSE

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FAQs on Rotation of Earth Video Lecture - Geography for UPSC CSE

1. What is the rotation of Earth?
Ans. The rotation of the Earth refers to the spinning motion of the Earth on its axis. It takes approximately 24 hours for the Earth to complete one full rotation.
2. How does the rotation of the Earth affect day and night?
Ans. The rotation of the Earth is responsible for the occurrence of day and night. As the Earth rotates, different parts of the planet are exposed to the Sun's light. The side facing the Sun experiences daylight, while the opposite side experiences darkness, resulting in the cycle of day and night.
3. What causes the rotation of the Earth?
Ans. The rotation of the Earth is primarily caused by the initial angular momentum it acquired during its formation. As the Earth's material collapsed and came together to form the planet, any initial rotation or movement was conserved due to the law of conservation of angular momentum.
4. Does the rotation of the Earth affect the weather?
Ans. Yes, the rotation of the Earth plays a significant role in shaping weather patterns. The rotation causes the Coriolis effect, which deflects moving air masses (and other fluids) to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This deflection influences the formation of wind patterns and the development of weather systems such as cyclones and anticyclones.
5. How does the rotation of the Earth affect the length of a day?
Ans. The rotation of the Earth determines the length of a day, which is approximately 24 hours. The consistent rotation speed of the Earth results in each day having the same duration. However, it is worth noting that the length of a day can vary slightly due to factors such as the Earth's axial tilt and changes in the speed of rotation caused by various factors like tidal forces.
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