Question

What is the Speed of earth rotation and revolution?

Answer 1

Hint: First we need to understand the basic difference between rotation and revolution of an object. A rotation is a circular movement of an object around a centre of rotation whereas revolution refers to the action by a celestial body of going round in an orbit or elliptical course.

Complete answer:
The motion along a curved path is termed as circular motion, like the orbital motion of planets, ice skaters, blades of the fan, gears, amusement park rides, etc. The two fundamental concepts which are studied in circular motion are rotation and revolution. While rotation means the movement in a circle round an axis, revolution is when an object moves in a circular path around another object or centre.
The spinning of the Earth around its axis is known as rotation. The axis has an angle of $ 23{\dfrac{1}{2}^ \circ } $ and it is perpendicular to the plane of Earth’s orbit. So, it can be said that Earth is tilted on its axis, and because of this tilt, the northern and southern hemispheres lean in a direction away from the Sun. The rotation of the Earth divides it into a lit-up half and a dark half, which gives rise to day and night. The direction of the earth rotation depends upon the direction of viewing. When viewed from the North Pole, Earth spins counter-clockwise. On the other hand , when viewed from the south pole, the earth spins in the clockwise direction.
The movement of the Earth around the Sun in a fixed path is called a revolution. The Earth revolves from west to east which means that it revolves in the anticlockwise direction. The Earth completes one revolution around the Sun in one year or precisely in 365.242 days. Also, the revolution speed of the earth is 30 kilometres per second.
The final answer is that the surface of the earth at the equator rotates at a speed of 460 meters per second or roughly 1,000 miles per hour. Also, the earth revolves around our sun at a speed of nearly 30 kilometres per second, or 67,000 miles per hour.

Note:
It is often misinterpreted that rotation and revolution are the same but this is not so. They differ from one another in the sense that rotation does not change the position of the object, but revolution does.