| in Did You Know Facts
When a piece of glass breaks, the cracks move at 3000mph.
![glass, sand, lime, soda, ash, high temperature](https://assets.shortpedia.com/uploads/2022/09/26/1664198571.webp?tr=w-1200,h-600,cm-pad_resize,bg-F3F3F3)
That's five times faster than the average airplane, which travels at 575 miles per hour!
That's five times faster than the average airplane, which travels at 575 miles per hour!