ICSE Class 9 Answered

Four effects of the Earth’s revolution are:

• Changes in the season: The revolution of the Earth results in the changing of the seasons. Seasons change due to the change in the position of the Earth around the sun.
• Creation of Heat Zones: Due to the spherical shape of the Earth, the Sun’s rays fall over it at different angles. This results in uneven distribution of the Sun’s heat. This results in the creation of different heat zones on the Earth’s surface.
• Perihelion and Aphelion positions: The orbit of the Earth is elliptical. When there is a minimum distance between the earth and the Sun, it is known as Perihelion. Similarly, when the distance between the Sun and the Earth is maximum, it is known as Aphelion.