Give reasons for the following:-
1. Altitude of the sun varies at a place according to
seasons
2. The speed of rotation at Singapore is much faster than
at Tokyo or Russia.
3. Mid-day sun can be seen overhead in Chennai twice a
year, but not even once in Delhi.
4. The sun is never overhead beyond the tropics.
Answers
Answer
1.During the summer the northern hemisphere is tilted towards the sun so it has summer and the southern hemisphere has winter. . . .2.Because of the rotation of the Earth.
The speed of rotation at Singapore is much faster than Tokyo or Russia as the speed of rotation is Earth is maximum at the equator and goes on decreasing and becomes minimum when reaches to poles.
3. The mid day sun can be overhead in Chennai twice a year but not even once in Delhi. This is because Chennai is more closer to the equator than Delhi due to which it receives more amount of Sunlight as
compared to Delhi .
4.The sun is never overhead beyond the tropics due to the latitudes. The sun's rays always fall directly on 0° latitude which is known as the equator. The sun rays can be experienced overhead till the tropic of cancer and Capricorn in the northern and southern hemispheres of the Earth respectively.