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Rocks 3 Of 5

Test Description: Rocks

Instructions: Answer all questions to get your test result.

1) What type of composition does an igneous rock have that contains mostly plagioclase feldspar and about 30% dark silicate minerals

Aultramafic Bgranitic Cbasaltic Dandesitic

2) Why can 2 igneous rocks have the same minerals but different names?

AThe rocks may befopund in different sizes BThe rocks may be different sizes CThe rocks may have different textures DThe rocks have different colors

3) A conglomerate is a rock that forms as a result of

Arapid cooling Bslow cooling Cintense hear and pressure Dcompaction and cementation

4) Which of the following represents the correct order of the processes involved in sedimentary rock formations?

Aerosion, weathering, compaction and cementation, deposition Bcompaction, cementation, deposition, weathering erosion Cdepositon, cementation, compaction, erosion, weathering Dweathering, erosion, deposition, compaction, cementation

5) Which sedimentary rock would most likely be deposited in a very high energy stream?

Asiltstone Bconglomerate Cshale Dcoal

6) Which of the following is responsible for the formation of rock gypsum? (use chart of pg 74)

Aweathering and erosion Bprecipitation from a water solution Ccooling of magma Drecrystallization frp,high temperatures and high pressures

7) What type of rock is composed of very fine crystalline quartz

Aflint Bsandstone Cchalk Drock gypsum

8) A course grained rock with angular fragments would be a (use chart of pg 74)

Asandstone Bconglomerate Ccrystalline limestone Dbreccia

9) A clastic sedimentary rock with particles that are 1.5mm in diameter would be classified as (use chart of pg 74)

Acoquina Bconglomerate Csandstone Dsiltstone

10) What type of sedimntary rock is formed from weathered particles of rocks and minerals?

Achemical sedimentary rock Bclastic sedmintary rock Cbiochemical sedimatru rock Dintrusive sedimentary rocks

*select an answer for all questions

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