Question

E. Answer the following questions.
1. Why are days and nights equal on 21st March at all places on the earth? Explain.
2. Explain with the help of a diagram, why seasons are reversed between Northern and Southern
Hemispheres.
3. Why does the month of February have 29 days, after every four years? Explain.
How do day and night occur on the earth? Explain with the help of a diagram.
4.​

Answer 1

Answer:

During the spring and autumn equinoxes, i.e. on 21 March and 23 September, the Sun is exactly overhead the Equator and the North and South Poles lie at an equal distance from the Sun. This is the reason days and nights are of equal length throughout the world on these two days.