In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: As the air rapidly rises , the hot air is stretched vertically and because of angular momentum , the spinning gets much more intense .
A:
As the air rapidly rises , the column of hot air is stretched vertically , thereby moving mass closer to the axis of rotation , which causes intensification of the spinning effect by conservation of angular momentum .