Why does it rain? Legit just why does it rain and how could you answer this question without looking it up on the internet or in a book

It rains because the water gets evaporated into earth's atmosphere and turned into small water gas droplets and it turns into clouds. the clouds get too heavy and start to spill water.

Because the sun causes water vapor and water vapor goes into clouds and becomes rain and it rains

Explanation: I managed to get this right without looking it up because school and science says so and I learnt this as a kid

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.