GEOLOGY

Detailed explanation-1: -It is the sudden buildup of gas pressure (see products above) that constitutes the nature of an explosion. The speed at which explosives decompose permits their classification as high or low explosives. The shock wave produced by the expanding gases causes much of the damage associated with an explosion.

Detailed explanation-2: -22, 000-28, 000 ft/sec. As the detonation wave progresses through the condensed explosive, it converts the explosive within a fraction of a microsecond into very hot, dense, high pressure gas. Pressures immediately behind the detonation front range from 2, 700, 000-4, 900, 000 psi.

Detailed explanation-3: -As the reaction progresses, the solid or liquid explosive material is converted to very hot, dense, high-pressure gas. The explosion products initially expand at very high velocities in an attempt to reach equilibrium with the surrounding air, causing a shock wave.

Detailed explanation-4: -An explosion is a rapid expansion in volume associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Supersonic explosions created by high explosives are known as detonations and travel through shock waves.

Detailed explanation-5: -The negative pressure phase causes additional or secondary damage, and it is common to find the debris moving towards the point of origin or in opposite directions from the positive pressure phase.