Long Quiz on SCI-155Please open the doc and answer the 60 question presented in the document.The quiz is related to Rocks.Need the assignment by today 9pm.The finally answer should be presented within in a hour and in the document.Please let me know if you have any questions.
Middlesex County College SCI-155
Exam 3 – Volcanoes and Rocks Name: Shruti Patel
1. Two different grain sizes in an igneous rock indicate:
a. two forms of metamorphism c. the rock cooled too slowly
b. there were 2 different cooling rates d. it is an intrusive igneous rock
2. In igneous rocks, large crystals/grains in a groundmass of smaller grains are called:
a. porphyrocks b. phenocrysts c. phanerites d. patchwork texture
3. Textural terms for extrusive rocks are:
a. phaneritic, porphyritic, aphanitic c. aphanitic, porphyritic, pyroclastic
b. apatitic, pyroclastic, phaneritic d. pyroclastic, phenocrystic, phaneritic
4. The main mineral constituents of granite are:
a. pyroxene and amphibole c. feldspar and quartz
b. quartz and calcite d. olivine and quartz
5. The main mineral constituents of a gabbro are:
a. quartz and plagioclase c. amphibole and apatite
b. olivine and muscovite d. pyroxene and Ca-plagioclase
6. Bowen’s Reaction Series is:
a. A method of determining the viability of a soil b. the crystallization process of sandstone lithification
c. the sequence of crystallization of minerals from magma d. the sequence of gradually increasing metamorphism
7. The texture of a basalt with some visible phenocrysts of plagioclase feldspar is:
a. porphyritic-phaneritic b. phaneritic-porphyritic c. phaneritic-aphanitic d. aphanitic-porphyritic
8. An igneous rock having grain sizes larger than one centimeter is called a:
a. porphyrite b. phanerite c. pegmatite d. phenocryst
9. Granitic magma originates:
a. in continental crust b. from the mantle c. from the melting of sandstone d. at transform boundaries
10. Basaltic magma originates:
a. in continental crust b. from the mantle c. from the melting of sandstone d. at transform boundaries
11. The very smallest volcanoes are called cinder cones because they have no lava flows, only ash and rock bits..
12 . Composite/stratovolcanoes volcanoes are volcanoes that alternate between explosive activity and lava
flows. Textures of extrusive rocks from this type of volcano can be aphanitic, _______________________________,
or have _________________________________ texture.
13. Gabbro is to basalt as ___________________________________ is to rhyolite.
a. garnet b. scoria c. granite d. diorite
14. Extrusive diorite is called ______________________________________________.
a. rhyolite b. andesite c. basalt d. magma
15. Molten rock within the Earth is called _________________________________. Molten rock extruded on the surface
is called _________________________________________. (fill-ins)
16. In classifying igneous rocks, we first see if the rock is
a. light or dark b. rough or smooth c. phaneritic or aphanitic d. paleolithic or azoic
17. What is the first mineral to crystallize from a melt according to Bowen’s Reaction Series? Olivine
Which is the LAST mineral to crystallize? b. Quartz
18. Which are ALL names for different intrusive igneous bodies?
a. laccolith, batholith, dike, sill c. till, batholith, megalith, laccolith
b. basalt flow, dike, volcano, magma d. megalith, fissure eruption, sill, trap
19. Hawaii is the tip of a _________________________________(<- fill in) volcano. This type of volcano is
(circle one ->) a. the smallest b. intermediate-sized c. the largest
20. Mt. Fuji in Japan and Mt. St. Helens on our northwest coast are examples of a _______________________volcano.
21. What is a rock? a) an amalgam of rock sediments b) an agglomerate of metacrystals
c) an aggregate of rock forming minerals d) an association of non-metallic minerals
22. Name the three ways a magma chamber can become altered, resulting in flows with different chemical signatures from the same volcano. (6 pts)
________________________________________________, ______________________________________________,
and ______________________________________________
23. What property is common to all limestones regardless of texture?
a. calcite b. reaction to HCl c. CaCO3 d. reaction to NaCl
24. What indicates that clastic sedimentary rocks form at the Earth’s surface?
a. layers, bedding surfaces c. roundness and sorting
b. sedimentary structures and fossils d. a, b, and c
25. The main mineral constituent of limestone and marble is:
a. coquina b. calcite c. aragonite d. lucite
26. Why is olivine a rare mineral in sandstone – even on beaches of volcanic islands? ____________________________
_______________________________________________________________________________________________
___________________________________________________________________________________________(2 pts)
27. Two chemical rocks precipitated from evaporating water are:
a. rock calcite and halite c. rock gypsum and rock salt
b. rock salt and fluorite salt d. gypsum and rock calcite
28. In classifying sedimentary rocks, we first see if:
a. the rock is light or dark c. the grain size is well sorted
b. the rock is clastic or non clastic d. the rock is hard or soft
29. List 2 environments in which shale accumulates: _______________________ & ________________________(2 pts)
30. In classifying metamorphic rocks, we first see if the rock is:
a. light or dark c. clastic or non clastic
b. coarse- or fine-grained d. foliated or non-foliated
31. Garnets are indicators of:
a. high grade metamorphism b. low grade mylonite
c. intermediate grade metamorphism d. high grade migmatite
32. The mineralogy of a large crystal in a metamorphic rock is likely to be:
a. garnet b. ruby c.quartz d. halite
33. A large crystal in a metamorphic rock is termed a:
a. phenocryst b. metacrystal c. megablast d. porhyroblast
34. Circle the correct sequence of metamorphism.
a. slate, phyllite, shale, gneiss, igneous c. gneiss, schist, slate, phyllite, shale
b. shale, slate, phyllite, schist, gneiss d. granite, slate, phyllite, shale, gneiss
35. Circle the correct sequence of events:
a. peat, anthracite, shale, sandstone c. peat, lignite, bituminous, anthracite
b. shale, peat, bituminous, anthracite d. anthracite, lignite, bituminous, peat
36. The original environment of deposition for coal is:
a. deep within the Earth c. in swamps
b. at divergent plate boundaries d. in a surface mine
37. A clastic sedimentary rock with large rounded pebbles is called a. _________________________________
and will break around the larger pebbles. When metamorphosed, this rock is called a
b. _________________________________ and will break right across the larger rounded pebbles.
38. A quartz beach sand will be:
a. dark and poorly sorted c. well-sorted with angular clasts
b. contain a lot of potassium feldspar d. well-sorted with rounded clasts
39. A poorly-sorted clastic sedimentary rock containing large angular bits of rock or mineral is
termed a (fill in)__________________________ , and formed (pick one) __close to, or far from ___the source.
40. The linear features (foliation) in some metamorphic rocks are the result of what kind of metamorphism?
___________________________________________________
41. Quartzite, hornfels, and many marbles are the result of what kind of metamorphism? ________________________
42. Match the rock with the environment of deposition.
a. coquina ________ u. deep lake
b. peat ________ w. delta
c, black shale ________ x. talus slope (formed at bottom of a cliff)
d. conglomerate ________ y. shallow marine with wave action
e. breccia ________ z. swamp
43. Most schists are composed predominantly of _____________________&____________________. (2 pts.)
“Word bank” for question 44 (Choose only ONE answer for each letter below.)
lignite rock gypsum conglomerate quartzite sandstone siltstone grindstone
sunstone rock salt shale slate limestone lime sand gravel
tillite breccia oolitic limestone mudstone coal arkose hornfels
44. Name a rock likely to be formed in each environment.
a. Deltas _________________________________ f. Shoreline ___________________________________
b. Floodplains _____________________________ g. Shallow-marine _______________________________
c. Glacial _________________________________ h. Deep-ocean _________________________________
d. Alluvial _________________________________ I. Organic Reefs ________________________________
e. Eolian (wind blown) _______________________ j. Playa Lakes __________________________________
“Word bank” for questions 45 through 50
felsite rhyolite roofing swamps pool table muscovite stone tools
wall board pipe stems coal mines basalt arkose olivine calcite
amphibole silica gypsum pyroxene sculpture deep lakes shallow marine
45. What is the major mineral composition of a dunite? ________________________________________________
46. Where is lignite likely to be forming? ____________________________________________________________
47. Name a rock from the felsic family. _____________________________________________________________
48. Name one use for chert. _________________________ What’s the chemical composition? ________________
49. What is a popular use for rock gypsum? _________________________________________________________
50. What is a popular use for slate? _______________________________________________________________
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