Which risk increased in Song Dynasty crossbows firing gunpowder-propelled bolts?

💡 Explanation

The increased shock from gunpowder combustion caused catastrophic failures, thus initiating stress concentration across micro-cracks; shattering becomes likely rather than slow deformation, because cast iron lacks ductility and has limited ability to deal with sudden impulse stresses.

• Which consequence results when early compound microscopes suffered from spherical aberration?
• Which risk increases when differential settling affects load-bearing ziggurat corners?
• Which structural problem plagued early iron bridge designs before the development of ductile iron?
• Which structural problem was frequently encountered when Roman legionary fortresses extended timber ramparts on sloped ground?
• Which outcome results when inadequately seasoned wood makes up the structural cables of a late Qing dynasty suspension bridge?
• Which outcome arises when chinampa farmers experience prolonged waterlogging during maize cultivation?