Question
Using larger electrodes in this technique requires safety equipment with a higher shade number. For 10 points each:
[10m] Name this technique that, when performed with a namesake electric arc, uses either an inert shielding gas or the byproduct slag to prevent contamination.
ANSWER: welding [or arc welding]
[10h] Arc welding can produce slag by melting this type of material that composes the core of a consumed wire. This type of material, which shares its name with a physical quantity, removes oxides in soldering.
ANSWER: flux
[10e] Shielding gas is needed when welding with a non-consumable electrode made of this metal. Incandescent lightbulb filaments are made of this metal with atomic symbol W.
ANSWER: tungsten
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Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 42 | 17.14 | 98% | 55% | 19% |