Question

how fo solor ecalips happen

Answer 1

solar sclipse : - when the moon come between the earth and the sun  the shadow on the moon is cast on the earth and that part remains the dark this dark part is called the solar eclipse 

Answer 2

when the moon comes in front of the sun forming a shadow on the earth this phenomenon Is called solar eclipse.
in this time the sun's light is completely blocked and it becomes dark in the middle of the day