Question

______ can be used to detect hidden faults.

Answer 1

Regarding a product or service, quality assurance is used to detect hidden faults. Quality assurance, is a team known as QA, that tests products before they go out into the market to make sure they pass quality tests. The main goal is to make sure little to no products are on the shelf with any defaults that the company can see. Although some may slip through the cracks, the quality assurance team prides themselves on finding any hidden faults. 

Answer 2

Answer:

The answer is "Seismographs"

Explanation:

It was first invented in 1842 by James David Forbes. Seismographs are instruments used to detect and make a record of earthquakes or any other earth-shaking phenomenon that is caused by the movement of the tectonic or lithospheric plates.

Seismographs can be used to detect hidden faults because of its electromagnetic sensors that transpose ground motions into electrical changes.