Why does the Fire Department break windows and cut holes in the roof of a burning building?
When there is a fire, you may have seen firefighters breaking windows and cutting big holes in the roof. What they are doing is called ventilation. Ventilation allows smoke and superheated gasses to escape from the building. This prevents two dangerous conditions known as flashover and backdraft that could potentially kill firefighters or any other people still inside the building. It also decreases the temperature inside of the building and increases visibility so that firefighters can work more safely and effectively. While it may look like the firefighters are just breaking things, they are actually performing a critical task at a fire.
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