How is 'sensitivity' defined in relation to explosives?

Sensitivity in relation to explosives is indeed defined as how easily an explosive can be detonated by various stimuli, such as heat, shock, or friction. This definition is crucial in understanding the behavior and handling of explosive materials. Sensitive explosives require less energy to initiate a detonation, making them more dangerous in terms of accidental triggering. This sensitivity to environmental factors is a key characteristic that safety professionals must consider when assessing risk and implementing safety measures.

The other options do not accurately capture the concept of sensitivity. The amount of explosive material present relates more to the scale of an explosion rather than its sensitivity. The time taken for an explosive to detonate does not relate to its sensitivity but rather to its detonation velocity. The color or appearance of explosive materials is irrelevant to their sensitivity and does not impact their behavior in terms of detonation. Therefore, understanding sensitivity is essential for safe handling and storage practices in explosive safety management.