Question

explain how days and nights are caused?

Answer 1

The earth revolves round the sun and rotates round its own axis. The rotation of the earth causes day and night. The part of the earth which faces the sun experiences the day time whereas the part away from sun gets no sun light and hence the night. The axis of earth's rotation is tilted at 23.5 degrees.

Answer 2

Cause of day and night:

• The Earth is a sphere which spins round and round as it travels around the sun

• We get day and night since the Earth spins (or rotates) on an imaginary line termed its axis and diverse parts of the planet are facing towards the Sun or away from it.  

• It takes twenty four hours for the world to turn all the way around, and we call this a day.

Hope it helped...