Which risk increased during the Song Dynasty development of early gunpowder weapons such as fire arrows?

💡 Explanation

Premature barrel explosion probability rose because inconsistencies in gunpowder composition and lack of sophisticated metal casting caused structural weaknesses, resulting in catastrophic failures, therefore early cannons exploded rather than consistently projecting projectiles. Other issues are related to aerodynamics.

• Which risk increases significantly when historical dry stone retaining walls experience freeze-thaw conditions?
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• Which risk increased along Roman roads during winter due to repeated freeze-thaw cycles affecting roadbed materials?
• What consequence results when a wooden ship hull experiences prolonged delamination in seawater?
• Which outcome arises when maize stalks decay within a raised Aztec chinampa?
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