Explain with the help of diagram how the tilt of the earth’* axis and the revolution cause.
seasons.
variation in the length of day and night; and
changes in the altitude of the midday sun at different times of the yea
The length of day decreases from the equator to the Poles. Apart from this the polar areas experience six month days and six months nights respectively.
The belt of sun’ migration between the Tropic of ** and Capricorn, consequently the sun ** overhead in this belt, while beyond this belt the sun never ** vertical at noon and the sun’ track *** slanting with shorter curved path in other regions.