Metamorphic rocks ____.
A)form when molten rock comes in contact with the atmosphere
B)often form depositional layers called bedding planes
C)are usually softer and less resistant to weathering than sedimentary rocks
D)are metamorphosed
E)include the rocks obsidian and conglomerate

Question

Metamorphic rocks ____. ​
A)form when molten rock comes in contact with the atmosphere
B)often form depositional layers called bedding planes ​
C)are usually softer and less resistant to weathering than sedimentary rocks ​
D)are metamorphosed ​
E)include the rocks obsidian and conglomerate ​

Quizplus · Accepted Answer

Metamorphic rocks are defined by their formation through the process of metamorphism, which involves the alteration of the mineral composition or structure of pre-existing rocks under the influence of high pressure and temperature conditions, without the rock melting. This is what makes option D correct. Options A, B, C, and E describe characteristics related to igneous rocks, sedimentary rocks, or inaccuracies about the properties of metamorphic rocks.

Metamorphic Rocks ____. ​

Metamorphic Rocks ____.