Asking why??

A desire to learn and understand is a wonderful thing for a child, and it should be nurtured and praised.  The world is a complicated place, and there is so much to learn in such a short time when you are a child; asking questions is an effective way of gaining knowledge and insight. So parents should revel in a child’s curiosity and encourage it, viewing it as a positive part of his growth,

Children  are innately and unendingly curious about the world and want to better understand the things they see, hear, and do. Ignoring the questions kids ask may stifle that curiosity and desire for knowledge,

Another reason why children are constantly asking questions is that they've discovered that this one easily articulated word can get your attention and a response. 

This kind of meaningful exchange is a remarkable thing to a beginning communicator who's still mastering the art of conversational give-and-take.
 Instead of answering certain questions, a parent can sometimes help the child to figure things out on his own.  Learning to analyze information and come up with an answer, as well as to formulate and test a hypothesis, are important parts of a child’s intellectual development

we can also try to question around on your child..

Curious children who love asking questions might also love coming up with answers. It may help him learn to think about things differently, from another perspective 

Children learn by asking questions......By keeping the dialogue open, you're telling your kids that you value their ideas and thoughts. So encourage your child to ask questions. It will help him:
Gain control over his world
Learn to think critically.
Learn to think critically.
Consider the complexities of life.

Asking lots of ‪#‎questions‬ is a sign of creativity, an important skill that seems to be in decline amongst this generation of school children. By encouraging your students to ask more questions, you can improve their‪#‎cognitiveabilities‬ in the following ways:

Questions motivate children to seek out knowledge that aligns with their interests and can therefore foster a lifelong love of learning.
They help children form links between pieces of information which in turn can help them develop well-structured essays and debates.
Can challenge pre-conceived ideas and give them the confidence to put forward their own views.