Question

The speed of revolution of earth in its orbit around the sun is:
a) Same throughout the year
b) Greatest when the earth is nearest to the sun
c) Greatest when the earth is farthest from the sun
d) Least when the earth is nearest to the sun

Answer 1

Hint: 'Rotation' refers to the rotating motion of an object around its own axis. "Revolution refers to the orbital movement of an object around another object. The World, for instance, rotates on its own axis, creating a 24-hour day. The World revolves around the Sun, making a year of 365 days. The Moon's gravity causes the oceans to appear to rise and fall as the Earth rotates. (This is often achieved by the Sun, but not so much).

Complete answer:
- Revolution of the World. The Planet also moves around the sun, in addition to spinning on its axis, in a direction called an orbit.
- The Planet travels an average distance of around 150 million km during a single rotation around the Sun. At an average speed of approximately 27 km (17 mi) per second, the planet revolves around the Sun, although the speed is not constant. While it is at aphelion, the planet moves slowly and when it is at perihelion, quicker.
- We discover that in a very nearly circular orbit, the earth passes around our sun. It covers this path at a speed of almost 30 kilometers per second, or 67,000 miles per hour. The Earth's travel around the Sun is a revolution. The axis of rotation of the Earth is inclined by 23.5 degrees. The different seasons of the year are caused by the tilt.

Hence, the correct answer is option b).

Note: Blame the Earth's orbit around the sun, which takes around 365, 25 days to complete. That is it. 25, which generates a need every four years for a leap year. To slow down and synchronize the calendar year with the seasons, a leap day is added to the calendar during leap years.