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Council of Student Organizations
De La Salle University – Manila
Rm. 402 Bro. Connon Hall, De La Salle University
2401 Taft Avenue, Manila
GEOENG1 Quiz 1 Reviewer
Prepared by: Dane Rei Abranilla
I.
Enumeration:
1 to 4. Geotechnical Applications
5 to 10. Silicate materials
11 to 12. Factors affecting weathering
13 to 15. Three components of magma
II.
Multiple choice:
1. Which of the following is NOT an agent of metamorphism?
a. pressure
b. heat
c. fluid activity
d. time
e. electromagnetism
2. Which is the order of decreasing grain size and perfection of foliation
a. gneiss -> schist -> phyllite -> slate
b. schist -> slate -> gneiss -> phyllite
c. phyllite -> slate -> schist -> gneiss
d. slate -> phyllite -> schist -> gneiss
e. none of the above
3. Which of the following does not belong to the group?
a. Pyroxene
b. Amphibole
c. Biotite mica
d. Muscovite mica
e. Olivine
4. What is the phaneritic counterpart of Andesite?
a. Peridotite
b. Diorite
c. Gabbro
d. Basalt
e. Rhyolite
5. The process in which chemical, physical, and biological changes occur after deposition of
sediments.
a. Metamorphism
b. Foliation
c. Diagenesis
d. Blasting
e. Hydrolysis
6. The nonfoliated metamorphic rock formed from limestone and dolostone is called
a. schist
b. quartzite
c. greenstone
d. marble
e. hornfels
7. This is a form of chemical weathering wherein electrons are lost from one element.
a. Dissolution
b. Electronification
c. Hydrolysis
d. Carbonation
e. Oxidation
8. This type of igneous texture is exceptionally coarse grained and forms in late stages of
crystallization of granitic magmas.
a. Porphyritic
b. Pyroclastic
c. Pegmatitic
d. Glassy
e. Aphanitic
9. The chief constituents of detrital rocks include the following EXCEPT:
a. Clay minerals
b. Micas
c. Feldspars
d. Olivine
e. Quartz
10. Which of the following is an example of mafic rocks?
a. Gabbro
b. Obsidian
c. Andesite
d. Pumice
e. None of the above
Modified True/False:
1. Water expands when it solidifies, rock shrink.
2. Tuff is an example of pyroclastic rocks.
3. Minerals have high specific gravities.
4. Geofabrics are sheets of interlocking steel or timber driven into the ground.
5. SPT stands for Soil Penetration Test.
Write the minerals that corresponds to the Mohr’s scale:
III.
IV.
1 - ______________
6 - ______________
2 - ______________
7 - ______________
3 - ______________
8 - ______________
4 - ______________
9 - ______________
5 - ______________
10 - ______________
Answers:
I.
Enumeration
1 to 4. Geotechnical Applications
Possible answers: Shallow foundation, Deep foundation, Retaining walls, Earth
dams, Concrete dams, Earthworks, Geofabrics, Reinforced earth walls, Soil nailing, Sheet
piles, Cofferdam, Shoring, Tunneling, Blasting, Ground improvement, Environmental
geomechanics.
5 to 10. Silicate materials
Feldspar, Quartz, Muscovite, Clay minerals, Pyroxene, Olivine
11 to 12. Factors affecting weathering
Effective surface area, Rock characteristics
13 to 15. Three components of magma
Liquid portion, Solids, Volatiles
II.
1. e
Multiple Choice
2. a
3. d
4. b
5. c
6. d
7. e
8. c
9. d
10. a
1.
2.
3.
4.
5.
III.
True/False
True
True
True
False; Sheet Piles
False; Standard
IV.
Mohr’s Circle
1 – Talc
6 – Orthoclase
2 – Gypsum
7 – Quartz
3 – Calcite
8 – Topaz
4 – Fluorite
9 – Corundum
5 – Apatite
10 – Diamond