Globules are defined as ball-shaped particles of molten metal, which term?

• A. Globules
• B. Sparks
• C. Droplets
• D. Filaments

Answer: (A)

Globules are defined as ball-shaped particles of molten metal because surface tension pulls the liquid metal into a sphere as it is expelled or transferred from the electrode. In welding, these spherical bits of molten metal travel through the arc environment toward the work, exactly matching the term globules. Sparks are the hot, glowing particles resulting from metal oxidation and combustion, filaments are long, thread-like shapes, and droplets is a general term for liquid drops but doesn’t specifically emphasize the spherical, surface-tension-driven form described here.