Practice Questions Sedimentary Rocks (Page 2 of 4) in pdf

Practice Questions Sedimentary Rocks Page 2

6. The profile below shows the average diameter of sediment that was sorted and deposited in specific areas A,

B, C, and D by a stream entering an ocean.

As compaction and cementation of these sediments eventually occur, which area will become siltstone?

A) A

B) B

C) C

D) D

7. A rock is composed of several large, rounded pebbles

12. Which type of rock is likely to show ripple marks and

and sand grains cemented together. Which inference

fossils?

about the rock is best supported by this description?

A) intrusive igneous

B) extrusive igneous

A) The rock is older than the pebbles.

C) metamorphic

D) sedimentary

B) The rock is igneous.

13. Base your answer to the following question on the

C) The rock is sedimentary.

diagrams below of five rock samples.

D) The rock resulted from evaporation of sea water.

8. Which rock is made up of angular fragments of rock held

together by a natural cement?

A) breccia

B) scoria

C) granite

D) quartzite

9. Which statement about the formation of a rock is best

supported by geologic evidence?

A) Magma must be weathered before it can change to

metamorphic rock.

B) Sediment must be compacted and cemented

before it can change to sedimentary rock.

Which sample is composed of sediments 0.006

C) Sedimentary rock must melt before it can change to

centimeter to 0.2 centimeter in size that were

metamorphic rock.

compacted and cemented together?

D) Metamorphic rock must melt before it can change

to sedimentary rock.

A) conglomerate

B) sandstone

C) gneiss

D) granite

10. Which land-derived sedimentary rock could have

formed by the compaction and cementation of particles

14. Which sequence of events occurs in the formation of a

smaller than 0.0003 centimeter in diameter?

sedimentary rock?

A) shale

B) siltstone

C) sandstone

D) limestone

11. Which feature is characteristic of sedimentary rocks?

A) layering

B) foliation

C) distorted structure

D) glassy texture

Practice Questions Sedimentary Rocks Page 2

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