Answer:
In addition to rotating on its axis, the Earth also travels around the sun in a path called an orbit. The motion around the sun along its orbit is called a revolution. The amount of time it takes for a single trip around the sun is called a period of revolution. The period for the Earth to revolve around the sun is 365.24 days or one year. The .24 days is why every four years February has 29 days.
Earth's orbit is not a perfect circle. Instead Earth's orbit is slightly elliptical in shape. The animation below shows the Earth's revolution around the sun.
