Question

Glossy dark color stone with sharp edges. Which characteristics describe this rock sample? Check all that apply. Evidence of rapid cooling evidence of slow cooling small crystals large crystals smooth texture coarse texture.

Answer 1

Rocks are categorized according to traits and attributes like mineral composition, chemical arrangement, permeability, the surface of the component particles, and particle dimensions and shape.

Evidence of slow cooling, large crystals and coarse texture are the characteristics that describe the rock.

How the rock is classified?

• The rocks are studied for the composition, texture and colour as the rock described has dark and woody brown colour, they lack fossil residues, and are glossy or course. The rock is not capable to react with acid and forms 95 % of the earth.

• As per the description, the rock can be classified as igneous as the hard rock can contain coarse grain, observable and large-sized crystal, and is an extrusive kind of rock that slowly cools.

Therefore, options B, D and F are the correct descriptions.

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Answer 2

Answer:

E smooth texture   C small crystals    A evidence of rapid cooling    

Explanation: