Movies and TV shows frequently show buildings being bombed, cars blowing up, etc. Frequently these are really explosions of miniatures filmed up close.
Aside from the speed that the explosion expands relative to the size of the object (which can be adjusted by slowing down the film), are there any features of an explosion that clue us in to the scale on which it occurs?
To be definite, let's imagine two tank trucks of gasoline, one 10m long and one 10cm long, but otherwise with the same proportions and made from the same materials. We film the big one exploding from 100m away and film the little one exploding from 1m away. How would we tell which footage is which?