All the planets in the Solar System spin as they orbit the Sun, but each does so at a different speed. The Earth takes 24 hours to complete a full spin, and it is this that gives us day and night. While a places faces towards the Sun, it has daylight, while it faces away from the Sun, it has night. The planets also take different lengths of time to orbit the Sun, the Earth, for example, takes 365 days , an Earth year. While the Earth orbits the Sun, the Moon orbits the Earth, taking 29 days, a lunar month, to complete a circuit.
The four seasons
The Earth's axis tilts at an angle of 23.5 degree. This tilt combined with Earth's orbit, gives hot summers and cold winters, and two seasons of change, spring and autumn.
Tag :spinning earth
Tag :four seasons
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