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Geography Quiz

PatrickNoonan

Rock Definitions

Description

Junior Certificate Geography Flashcards on Rock Definitions, created by Shane Buckley on 25/05/2014.

Flashcards by Shane Buckley, updated more than 1 year ago

	Created by Shane Buckley about 11 years ago

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Resource summary

Question	Answer
Igneous	They are formed as a result of volcanic activity. Hot molten magma escapes from the mantle. It cools and solidifies quickly into rock on the earth's surface or slowly deep inside the crust
Sedimentary	They are formed from the particles of rocks and dead plants and animals(fossils). They were deposited on sea and lake beds as well as on land. Layers of this material built up over time and were compressed and cemented creating solid rock.
Metamorphic	They are formed from rocks that already exist. They form when igneous or sedimentary rocks are changed into new harder rocks by great heat or pressure or sometimes both.

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