In this sentence, "rock" is a noun.
The word "terrestrial" can function as an adjective.
Geology is a noun.
Twenty grams would be considered the mass of the rock, which is a measure of the amount of matter it contains.
Yes, a volcanic eruption is part of the rock cycle. When a volcano erupts, magma from beneath the Earth's surface is expelled onto the surface as lava. Once the lava cools and solidifies, it forms igneous rock, which is a key component of the rock cycle.
Some geological events that can destroy a part of the rock record include erosion, which wears away layers of rock, volcanic eruptions that cover existing rock layers in lava, and tectonic movements like faulting or folding that disrupt the original structure of the rocks.
verb
Rock can be a verb or a noun. It can be the action of moving something back and forth. It can refer to a stone.
The word crag is a noun. A crag is a rugged rock.
The word sedimentary is an adjective. It is a geological term used to describe a form of rock.
The word "crag" is a noun. It refers to a steep or rugged rock or cliff.
Aquifer is a noun. It refers to an underground layer of water-bearing rock or sediment that can supply water.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.