Question

what type of movement direction is shown by a flame ?

Answer 1

Answer:

First, while it moves up, it carries energy with it, thus the flame ends up pointing "up

Explanation:

A candle flame points upwards because flame is extremely hot, and thus less dense than air (by a routine approximation using the Ideal Gas Law), and thus rises. A hot air ballon floats for the exact same reason. As mentioned in the "possible duplicate" question, this effect disappears in the absence of gravity.