Why do we pucker our lips when blowing out a candle?
When we pucker our lips, the area through which air escapes from the mouth is reduced. This increases pressure and speed of the air that helps in blowing out the candle.
When we suck water from a water bottle , our lips tend to experience a vaccume. Why does this happen?
Why does the flame of a burning candle goes off when we blow over it strongly?
Why do tears come out of our eyes when we cry
Why do tears come out of our eyes when we feel depressed?