MSCI 112 EXAM 1 QUESTIONS VERIFIED ANSWERS
Which of the following plates is moving the fastest?
A. the Eurasian Plate
B. the Pacific Plate
C. the North American Plate
D. the African Plate - Answers - B
The average density of continental crust is ________ g/cm3.
A. 4.0
B. 2.8
C. 3.0
D. 3.4 - Answers - B
The North American Plate is bounded by ______ plate boundaries.
A. divergent
B. convergent, divergent, and transform
C. convergent
D. transform - Answers - B
Earth exchanges __________ with the rest of the cosmos.
A. energy, but not mass,
B. energy and mass
C. neither energy nor mass
D. mass, but not energy, - Answers - B
The Appalachian Mountains formed from an ancient ____________ plate boundary.
A. divergent
B. transform
C. converform
D. convergent - Answers - D
Geologic processes can take place of over times that last from
A. seconds to centuries.
B. minutes to weeks.
C. years to decades.
D. seconds to billions of years. - Answers - D
, Mid-ocean ridges are also referred to as
A. island arcs.
B. hot spots.
C. spreading centers.
D. trench zones. - Answers - C
The typical depth of ocean basins is
A. 4 to 5 km.
B. 8 to 10 km.
C. 1 to 2 km.
D. 10 to 12 km. - Answers - A
The lithosphere is composed of
A. lowermost crust and upper mantle
B. crust and mantle
C. crust and uppermost mantle.
D. uppermost crust - Answers - C
What powers Earth's external heat engine?
A. gravitational energy
B. tidal forces
C. solar energy
D. radioactive decay - Answers - C
Seismic wave speeds increase with
A. decreasing density and increasing temperature.
B. increasing density and temperature.
C. decreasing density and temperature.
D. increasing density and decreasing temperature. - Answers - D
Which of the following processes is responsible for the recording of the magnetic
reversals on the seafloor?
A. tectonosilicate magnetism
B. metamorphic magnetism
C. depositional remanent magnetism
D. thermoremanent magnetism - Answers - D
How old are the oldest rocks on the ocean floor?
Which of the following plates is moving the fastest?
A. the Eurasian Plate
B. the Pacific Plate
C. the North American Plate
D. the African Plate - Answers - B
The average density of continental crust is ________ g/cm3.
A. 4.0
B. 2.8
C. 3.0
D. 3.4 - Answers - B
The North American Plate is bounded by ______ plate boundaries.
A. divergent
B. convergent, divergent, and transform
C. convergent
D. transform - Answers - B
Earth exchanges __________ with the rest of the cosmos.
A. energy, but not mass,
B. energy and mass
C. neither energy nor mass
D. mass, but not energy, - Answers - B
The Appalachian Mountains formed from an ancient ____________ plate boundary.
A. divergent
B. transform
C. converform
D. convergent - Answers - D
Geologic processes can take place of over times that last from
A. seconds to centuries.
B. minutes to weeks.
C. years to decades.
D. seconds to billions of years. - Answers - D
, Mid-ocean ridges are also referred to as
A. island arcs.
B. hot spots.
C. spreading centers.
D. trench zones. - Answers - C
The typical depth of ocean basins is
A. 4 to 5 km.
B. 8 to 10 km.
C. 1 to 2 km.
D. 10 to 12 km. - Answers - A
The lithosphere is composed of
A. lowermost crust and upper mantle
B. crust and mantle
C. crust and uppermost mantle.
D. uppermost crust - Answers - C
What powers Earth's external heat engine?
A. gravitational energy
B. tidal forces
C. solar energy
D. radioactive decay - Answers - C
Seismic wave speeds increase with
A. decreasing density and increasing temperature.
B. increasing density and temperature.
C. decreasing density and temperature.
D. increasing density and decreasing temperature. - Answers - D
Which of the following processes is responsible for the recording of the magnetic
reversals on the seafloor?
A. tectonosilicate magnetism
B. metamorphic magnetism
C. depositional remanent magnetism
D. thermoremanent magnetism - Answers - D
How old are the oldest rocks on the ocean floor?
