Movements Of The Earth

Revolution of the Earth - The Year

When a body is circling around another body, it is said that the first body is revolving around the other body. One complete round trip of a body around another body or a point is called a revolution. As mentioned earlier, the Earth also revolves around the Sun (Figure 10.4).

                                                   Figure 10.4 Revolution of Earth
This is called orbital motion of the Earth. The path of its orbital motion is nearly a circle of radius 152 million kilometers. The Earth completes one revolution around the Sun in about 365 days. This time is also called a year.