describe the phenomenon of seasons
- The Earth moves in an elliptical orbit that requires 365 1/4 days. The axis of the Earth's spin is tilted with reference to the orbital plane and this tilt causes seasons. Because of this reason, different parts of the Earth receive different amount of sunlight at different times of the year, and hence experience the change in the seasons.
- When an axis faces the sun, it is summer in the respective hemisphere. When the axis faces away the sun, the given hemisphere experiences winter.
the phenomenon of seasons is not a result of earth moving away from the sun. it is because of the tilt of the earth s axis at an angle of 231/2 degree in relation to its orbital path this tilt explain that why one hemisphere receives more sunlight than the other. If the earth s axis had not been tilted there would be no seasonal variations in temperature .