The Preexisting Rock Which Is Subsequently Altered to Form a Metamorphic

question 31

Multiple Choice

The preexisting rock which is subsequently altered to form a metamorphic rock is termed a ____________.

• A) parent rock
• B) source rock
• C) protolith
• D) premetarock

---

Definitions:

Snap Rings

Metal rings that fit into grooves on a shaft or in a bore, designed to hold components in place by exerting radial pressure.

O-Rings

Circular, elastomeric seals used to prevent the passage of liquids or gases between two surfaces.

Semi-Circular

Describes a shape or object that is half of a circle or roughly forming a half-circle contour.

Load Capacity

The maximum load weight or force that a structure, machine part, or material can safely support without failure.