Question

please select the correct answers from the dropdown list:

1. a protective screen set up around a welding operation designed to safeguard workers not directly involved in the operation is a(n) ______
2. a process using heat in excess of 800°f (427°c) on a base metal, along with a filler metal in order to join pipe is called ______
3. filters designed to capture very small particles are called ______
4. a structure that is used to protect workers in trenches but lacks the ability to prevent cave - ins is ______
5. working near a hazard, but not actually in contact, is known as ______
6. a vertical barrier called a(n) ______ is used at the top on scaffolds to prevent materials from falling.
7. a(n) ______ shows which way the wind is blowing.

dropdown options (visible): shielding, wind sock, high efficiency particulate air (hepa) filters, welding curtain, toeboard, proximity work, brazing

Explanation:

Question 1

A protective screen around a welding operation to safeguard workers from radiation (like UV, infrared) and sparks is shielding. Welding curtain is for containing sparks but not the main protective screen setup; wind sock is for wind direction, etc. So the correct term is Shielding.

Brazing uses heat above 800°F (427°C) with a filler metal (not melting the base metal) and has high efficiency for joining pipes. Welding melts base metal, so brazing fits here.

Filters with high efficiency particulate air (HEPA) or similar that capture small particles (like in welding fume extraction) are High efficiency particulate air (HEPA) filters, so the term is High efficiency particulate air (HEPA) filters (matching the dropdown option "High efficiency particulate air (HEPA) filters").

Answer:

Shielding

Question 2