EXERCISE 4.1 Environments of Rock Formation Name: Course: Section: Date: setings
ID: 154032 • Letter: E
Question
EXERCISE 4.1 Environments of Rock Formation Name: Course: Section: Date: setings are descibed below in which thee dfferent classes of rocks form, Fillin the blanks by indicating which clas of rocks is the result. g tne coast, waves carry sand out into deeper, quieter water, where it accumulates and gradually becomes bur (b) Thick flows of glowing red lava engulf farms and villges on the flanks of Mt Etna, a volcano in Sicily The cold, black (co) The broad tundra plains of nothem Canada expose gay. massive rock that formed many kilometers below a moun- A rock formed from sand grains cemented together is rock formed when these flows are cool enough to walk on is tain belt. This rock, exposed only after the overlying rock was stripped away, is glowing red lava engulf farms and villages on theExplanation / Answer
The answer to the above question is as follows-
A) Along the coast, the waves carry sand into the deeper, quieter water, where it accumulates and gradually becomes buried . A rock formed by cementing sand grains are called sedimentary rocks.
DESCRIPTION - Sedimentary rocks are said to be the type of rocks having a cementing texture and something which formed by the lithhification of the sediments which are produced by various agents like sea, river, glacier, wind etc.
B) Thick flows of glowing red lava engulf farms and villages of the Mt. Etna, a volcano at Silicy. The cold, black rock formed when these rocks are cold enough to walk on is Igneous rock.
Igneous rocks are formed by the crystallisation of the minerals formed by the volcanic eruptions and they have an interlocking tecxture of the minerals
C) The broad tundra plains of the North Canada expose gray, massive rock that formed many kilometers below a mountain belt. This rock, exposef only after the overlying rock is stripped away is, Metamorphic rock.
The metamorphic rocks are formed by the process called metamorphism which is considered to be a process by which the igneius or the sedimentary rock mineral compositions are changed due to the exposure into a different temperature and pressure conditions.
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