SCIN 138 Week 5 Exam

SCIN 138 Week 5 Exam | Assignment Help | american-public-university-system

Week 5 Exam

Question 1 of 25

What is the texture of this metamorphic rock?

 

  A. fissile

  B. phaneritic

  C. foliated

  D. nonfissile

  E. nonfoliated

 

 

 

Question 2 of 25

Heat promotes recrystallization by

 

  A. increasing atomic vibration

  B. stripping away valence electrons

  C. separating ultramafic elements from mafic ones

  D. causing minerals to melt

 

 

 

Question 3 of 25

What are the textures of metamorphic rocks?

 

  A. foliated or nonfoliated

  B. phaneritic or aphanitic

  C. clastic or detrital

  D. coarse or fine

 

 

Question 4 of 25

What is the texture of this rock?

 

 

  A. foliated

  B. non-foliated

  C. Phaneritic

  D. coarse

  E. fissile

 

 

 

Question 5 of 25

Which metamorphic facies is associated with subduction zones?

 

  A. greenschist

  B. granulite

  C. lawsonite-blueschist

  D. epidote-eclogite

 

 

 

 

 

Question 6 of 25

What are the three agents of metamorphism?

 

  A. differential pressure, deep-sea smokers, and hydrothermal vents

  B. differential pressure, heat, and temperature

  C. differential pressure, confining pressure, and lithostatic pressure

  D. temperature, pressure, and chemically reactive fluids

 

 

 

 

Question 7 of 25

The core of a mountain range that formed during regional metamorphism would contain a _____ metamorphic facies.

 

  A. blueschist

  B. phaneritic

  C. low-grade

  D. high-grade

  E. moderate-grade

 

 

Question 8 of 25

Which of the following is true of metamorphic rocks?

 

  A. They form when rocks melt under intense heat and pressure

  B. They form as a result of volcanic processes.

  C. They form as a result of weathering and erosion.

  D. They form as a result of intense heat and pressure.

 

 

 

Question 9 of 25

The core of a mountain range that formed during regional metamorphism would contain a _____ metamorphic facies.

 

  A. high-grade

  B. low-grade

  C. moderate-grade

  D. blueschist

 

 

Question 10 of 25

At what temperature does diagenesis end and metamorphism begin?

 

  A. 100 degrees Celsius

  B. 3,000 kbars

  C. 200 degrees Celsius

  D. 1,000 bars

 

 

 

 

 

 

 

 

Question 11 of 25

Which type of metamorphism is responsible for the greatest amount of deformation?

 

  A. subduction

  B. regional

  C. burial

  D. contact

  E. fault

 

 

Question 12 of 25

The parent rock of a metamorphic rock is what?

 

  A. The rock after it was subjected to metamorphism.

  B. The rock before it was subjected to metamorphism.

  C. The first rock formed during metamorphism.

  D. The rock as it is subjected to metamorphism.

 

 

 

 

 

 

 

 

 

Question 13 of 25

A foliated texture means what?

 

  A. Fossils are visible.

  B. layers or banding.

  C. grains are the same size

  D. Grains are easily seen.

 

 

 

Part 2 of 3 - Crustal Deformation 

Question 14 of 25

 

Imagine you are making a pizza, you start off with the dough for the crust in a large ball. You then begin to roll out the pizza dough with a roller. The result is flattened out dough. In this scenario, what simulates the STRAIN found in some rocks?

 

  A. the shape of the dough grains

  B. the force exerted on the dough

  C. the stickiness of the dough

  D. the flattening out of the dough ball

 

Question 15 of 25

Which process create the world’s largest mountain ranges?

 

  A. converging ocean–continental plates

  B. diverging ocean plates

  C. converging continental plates

  D. diverging continental plates

 

 

Question 16 of 25

Shear stress is primarily associated with which type of faults?

 

  A. normal faults

  B. thrust faults

  C. strike slip faults

  D. reverse faults

 

 

Question 17 of 25

Forces that act to elongate the crust are associated with ________.

 

  A. compression.

  B. tension.

  C. compression and tension

  D. shear.

 

 

Question 18 of 25

If a rock layer has a dip of 90 degrees, how is that rock layer oriented relative to a horizontal plane.

 

  A. Vertical (perpendicular to level ground)

  B. Horizontal (parallel to level ground)

  C. Diagonal (45 degrees from level ground)

  D. More information is required

 

 

 

Question 19 of 25

Forces that act to shorten the crust are associated with ________.

 

  A. compression.

 B. compression and tension

  C. tension.

  D. shear.

 

 

Question 20 of 25

Compression stress is primarily associated with which type of faults?

 

  A. reverse faults

  B. transform

  C. strike slip faults

  D. normal faults

 

 

Question 21 of 25

What type of fault results from the hanging wall moving down?

 

  A. normal

  B. strike slip

  C. thrust

  D. reverse

 

 

Question 22 of 25

What type of fault results from tension?

 

  A. thrust

  B. normal

  C. strike slip

  D. reverse

 

 

Question 23 of 25

A rock is subjected to high stress and does not break, but it also does not return to it’s original shape when the stress is relieved. It can be said that the rock _______

 

  A. is elastic

  B. is brittle.

  C. is strong

  D. is ductile.

 

 

Part 3 of 3 - Weekly Lesson Questions   

Question 24 of 25

A foliated metamorphic rock, in order of increasing metamorphic grade, is:

 

  A. Slate, phyllite, schist, gneiss

  B. Gneiss, schist, phyllite, slate

  C. Marble, quartzite, eclogite, gneiss

  D. limestone, eclogite, marble

 

 

 

 

Question 25 of 25

Which situation will result in ductile deformation?

 

  A. High temperature, low confining pressure, high strain rate

  B. Low strain rate, high temperature, high confining pressure

  C. Low strain rate, high confining pressure, low temperature

  D. Low temperature, low confining pressure, high strain rate