GEOLOGY 201 ISU EXAM QUESTIONS
WITH 100% CORRECT ANSWERS
Which silicate mineral has a single chain structure? - Answer- pyroxene
Which of the following minerals has the lowest silica content - Answer- gabbro
Which of the following minerals make up the continuous side of Bowen's reaction
series? - Answer- Plagioclase
__________is a sedimentary rock that can be formed by the deposition of mixed
materials by fast streams. - Answer- conglomerate
A detrital sedimentary rock composed of clay-sized particles called - Answer- shale
Which of the following is a foliated, coarse-grained metamorphic rock? - Answer- gneiss
The component of a rock's shear strength measured when no normal stress is applied is
called - Answer- cohesion
The type of stresses needed to produce a thrust fault can be described by which of the
following statements? - Answer- The maximum principle stresses are horizontal and
compressional
The moment of magnitude - Answer- calculated from the values of fault displacement,
area, and the shear modulus
The subsurface point of initiation of rupture of an earthquake is called - Answer-
hypocenter
The world's population growth rate - Answer- is variable over time
The Hubbert Peak in the U.S. oil production - Answer- occurred in the 1970's.
Which of the following is now the largest resource for electricity generation in the US? -
Answer- natural gas
The 'greenhouse' effect in the atmosphere is caused by - Answer- certain gases
absorbing the Earth's long-wave radiation.
WITH 100% CORRECT ANSWERS
Which silicate mineral has a single chain structure? - Answer- pyroxene
Which of the following minerals has the lowest silica content - Answer- gabbro
Which of the following minerals make up the continuous side of Bowen's reaction
series? - Answer- Plagioclase
__________is a sedimentary rock that can be formed by the deposition of mixed
materials by fast streams. - Answer- conglomerate
A detrital sedimentary rock composed of clay-sized particles called - Answer- shale
Which of the following is a foliated, coarse-grained metamorphic rock? - Answer- gneiss
The component of a rock's shear strength measured when no normal stress is applied is
called - Answer- cohesion
The type of stresses needed to produce a thrust fault can be described by which of the
following statements? - Answer- The maximum principle stresses are horizontal and
compressional
The moment of magnitude - Answer- calculated from the values of fault displacement,
area, and the shear modulus
The subsurface point of initiation of rupture of an earthquake is called - Answer-
hypocenter
The world's population growth rate - Answer- is variable over time
The Hubbert Peak in the U.S. oil production - Answer- occurred in the 1970's.
Which of the following is now the largest resource for electricity generation in the US? -
Answer- natural gas
The 'greenhouse' effect in the atmosphere is caused by - Answer- certain gases
absorbing the Earth's long-wave radiation.
