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Do you Know Rocks?

Bobby Herzberger

Try and solve the crossword puzzle to win the secret prize!...There is not a prize actually

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1.classified principally according to the minerals they consist of and on their chemical composition
7.The vast majority of the Earth's surface
8.a rock consisting of individual stones that have become cemented together
9.a naturally occurring glass formed as an extrusive igneous rock
13.esults from partial melting of a mafic rock above a subduction zone
14.currently known only on Earth where it forms a major part of continental crust.
16.fine-grained, foliated, homogeneous, metamorphic rock
17.It is usually gray to black and fine-grained due to rapid cooling of lava
18.textural term for a volcanic rock
19.nonfoliated metamorphic rock resulting from the metamorphism of limestone
2.Fine-grained aquifer
3.can be considered as the extrusive equivalent to the plutonic granite rock
4.the largest source of fuel for the generation of electricity world-wide
5.name of a sedimentary carbonate rock
6.very resistant to chemical weathering and often forms ridges and resistant hilltops
10.rock composed of angular fragments of several minerals
11.fine-grained metamorphic rock
12.metamorphic rock with a high hardness
15.commonly known as rock salt.

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