What is a distinguishing feature of low order explosions?

A distinguishing feature of low order explosions is that they involve a slow pressure rise. This characteristic means that the explosive reaction occurs at a lower velocity compared to high order explosives, which produce a rapid and violent release of energy. In low order explosions, the energy is released gradually, leading to a more controlled and less destructive reaction. This slower rate of energy release often means that low order explosions do not generate the same level of shattering or breaking effects that high order explosions do, which is why they are categorized differently.

In contrast, the other characteristics associated with low order explosions, such as producing blast craters or occurring at the speed of sound, relate more to high order explosives. The breaking or shattering effect mentioned is also typically more associated with high order explosions due to their rapid energy release and shockwave production. Thus, the option highlighting the slow pressure rise accurately captures the key feature that distinguishes low order explosions from their high order counterparts.