ROCK TEST

1. The cooling and hardening of magma deep underground results in rocks classified as: a. plutonic b. volcanic c. sedimentary d. metamorphic

2. Which is most likely to form the furthest away from the shoreline?

a. pebble conglomerate c. silty (clay) shale

b. quartz sandstone d. gravel conglomerate

3. All rocks contain:

a. fossils b. interlocking crystals c. minerals d. cleavage

4. Which is NOT a feature of sedimentary rocks?

a. ripple marks b. cross-bedding c. concretions d. glassy texture

5. Which most likely cooled underground?

a. sandstone b. gabbro c. limestone d. shale

6. According to James Hutton's theory of uniformitarianism, the source of a river valley is:

a. a sudden collapse of a portion of the Earth's crust.

b. a wrinkling of the Earth's crust as it cooled.

c. from a long, continuing force of erosional processes.

d. from an impact by a huge meteorite.

7. Which best describes mafic magma?

a. high silica, dark color c. low silica, dark color

b. low silica, light color d. high silica, light color

8. Granite and Gabbro are similar in:

a. color b. texture c. size d. taste

9. An igneous rock with two distinctly different textures is called a:

a. porphyry b. felsic c. mafic d. pumice

10. Fossils are most likely to be found in rocks that are:

a. sedimentary b. volcanic c. plutonic d. metamorphic

11. Small crystal-lined structures that sometimes appear in eroded limestone and are often referred to as "diamonds", are correctly called:

a. plutons b. fossils c. pores d. geodes

12. A mafic rock most like pumice is:

a. granite b. sandstone c. obsidian d. scoria

13. In which kind of rock is mud cracks mostly likely to be observed?

a. shale (from clay) c. gneiss (from conglomerate)

b. sandstone (from sand) d. gabbro (from magma)

14. Which is the best match for the "parent" rock to its "child"?

a. granite -> gabbro c. shale -> slate

b. sandstone -> marble d. basalt -> obsidian

15. Shales and other rocks that do not allow penetration by water are:

a. wet b. plastic c. impermeable d. rubber

16. The arrangement of sedimentary rocks in a certain order is called:

a. piling b. stratification c. foliation d. cleavage

17. Silica, calcite and iron oxide are referred to as great:

a. rocks b. vitamins c. Flintstone chewables d. cementing agents

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Match the following rocks to their correct rock category (classification).

18. GRANITE CHOOSE FROM THIS LIST:

19. RHYOLITE A. Sedimentary Rock

20. SANDSTONE B. Igneous Rock

21. GNEISS C. Metamorphic Rock

22. OBSIDIAN

23. QUARTZITE

24. GABBRO

25. MARBLE

26. SHALE

27. SCORIA

28. SCHIST

29. COAL

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PART II

Please begin identifying the rocks placed out for you to look at. Match the number by each rock to the correct line on your answer sheet. Write in the name of that rock next to the corresponding number on the answer sheet.

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EXTRA CREDIT

A. Select the correct process of shale undergoing metamorphism:

a. Shale - Schist - Granite - Gabbro c. Shale - Phyllite - Schist

b. Shale - Slate - Phyllite - Schist d. Shale - Basalt - Gneiss

B. Select the best order of correlating all three rock classes:

a. Granite - Slate - Gneiss c. Rhyolite - Sandstone - Quartzite

b. Obsidian - Pumice - Scoria d. Marble - Sandstone - Limestone

C. Name the three forms of Sedimentary rocks:

a. Clastic, Mafic, Organic c. Clastic, Felsic, Igneous

b. Regional, Contact, Organic d. Chemical, Organic, Clastic