What causes a microburst?

Question

What causes a microburst?

Answer 1

Here is my definition:

A microburst is caused by the development of greatly cooled air in a thunderstorm as a result of evaporative cooling by large amounts of precipitation.

As you probably know, cold air sinks. The air eventually gets so cold that it falls rapidly towards the ground.

Answer 2

A microburst is a very localized column of sinking air, producing damaging divergent and straight-line winds at the surface that are similar to but distinguishable from tornadoes which generally have convergent damage.

Answer 3

Microburst is a lot like gravity gets too much and the wind rushes down and outward,  and a tornado is  swirling mass with not convergence as much as sheer....