MSCI 112 EXAM 2 QUESTIONS VERIFIED ANSWERS
A fault line has recurrence interval of 100 years and a long-term slip rate of 5 cm/year.
How much does the fault slip when it ruptures?
A. 1 cm
B. 100 m
C. 5 m
D. 1000 m - Answers - C.
An earthquake's Richter magnitude is based on the
A. amount of ground movement caused by seismic waves.
B. observed effects on people and structures.
C. distance between the earthquake and the seismograph station.
D. amount of energy released during an earthquake. - Answers - A.
An undeformed sedimentary layer is ______ than the layer above and ______ than the
layer below.
A. younger; older
B. older; older
C. younger; younger
D. older; younger - Answers - D.
A rock formed with 1000 atoms of a radioactive parent element, but contains only 250
radioactive parent atoms today. If the half-life for the radioactive element is one million
years, how old is the rock?
A. 4 million years old
B. 2 million years old
C. 750,000 years old
D. 250,000 years old - Answers - B.
Basaltic lava that cools under water forms distinct _________ features.
A. pillow lava
B. aa
C. vesicular
D. pahoehoe - Answers - A.
Earthquakes that originate at depths greater than 100 km are associated with ______
plate boundaries.
A. convergent, divergent, and transform
B. convergent
C. transform
D. divergent - Answers - B.
Energy waves that are released during an earthquake are called
, A. seismic waves.
B. elastic waves.
C. stress waves.
D. shock waves. - Answers - A.
Eruptions of rhyolite lava tend to be more explosive than basaltic and andesitic lavas
because rhyolite lavas
A. are less viscous.
B. are more dense.
C. form larger volcanoes.
D. contain more gases. - Answers - D.
Fossils are most common in which rock types?
A. sedimentary
B. igneous
C. metamorphic
D. Fossils are equally common in sedimentary, igneous, and metamorphic rocks. -
Answers - A.
How do rock particles move during the passage of an S wave through the rock?
A. back and forth at right angles to the direction of wave travel
B. back and forth parallel to the direction of wave travel
C. in a rolling elliptical motion
D. in a rolling circular motion - Answers - A.
How fast do tsunamis travel across the ocean?
A. up to 5 kilometers per hour
B. up to 10,000 kilometers per hour
C. up to 60 kilometers per hour
D. up to 800 kilometers per hour - Answers - D.
How long did the Proterozoic eon last?
A. approximately 2 billion years
B. approximately 500 million years
C. approximately 4 billion years
D. approximately 1 billion years - Answers - A.
How many seismograph stations are needed to locate the epicenter of an earthquake?
A. two
B. three
C. one
D. four - Answers - B.
How old are the oldest zircon minerals on Earth?
A. approximately 4 billion years old
B. approximately 500 million years old
A fault line has recurrence interval of 100 years and a long-term slip rate of 5 cm/year.
How much does the fault slip when it ruptures?
A. 1 cm
B. 100 m
C. 5 m
D. 1000 m - Answers - C.
An earthquake's Richter magnitude is based on the
A. amount of ground movement caused by seismic waves.
B. observed effects on people and structures.
C. distance between the earthquake and the seismograph station.
D. amount of energy released during an earthquake. - Answers - A.
An undeformed sedimentary layer is ______ than the layer above and ______ than the
layer below.
A. younger; older
B. older; older
C. younger; younger
D. older; younger - Answers - D.
A rock formed with 1000 atoms of a radioactive parent element, but contains only 250
radioactive parent atoms today. If the half-life for the radioactive element is one million
years, how old is the rock?
A. 4 million years old
B. 2 million years old
C. 750,000 years old
D. 250,000 years old - Answers - B.
Basaltic lava that cools under water forms distinct _________ features.
A. pillow lava
B. aa
C. vesicular
D. pahoehoe - Answers - A.
Earthquakes that originate at depths greater than 100 km are associated with ______
plate boundaries.
A. convergent, divergent, and transform
B. convergent
C. transform
D. divergent - Answers - B.
Energy waves that are released during an earthquake are called
, A. seismic waves.
B. elastic waves.
C. stress waves.
D. shock waves. - Answers - A.
Eruptions of rhyolite lava tend to be more explosive than basaltic and andesitic lavas
because rhyolite lavas
A. are less viscous.
B. are more dense.
C. form larger volcanoes.
D. contain more gases. - Answers - D.
Fossils are most common in which rock types?
A. sedimentary
B. igneous
C. metamorphic
D. Fossils are equally common in sedimentary, igneous, and metamorphic rocks. -
Answers - A.
How do rock particles move during the passage of an S wave through the rock?
A. back and forth at right angles to the direction of wave travel
B. back and forth parallel to the direction of wave travel
C. in a rolling elliptical motion
D. in a rolling circular motion - Answers - A.
How fast do tsunamis travel across the ocean?
A. up to 5 kilometers per hour
B. up to 10,000 kilometers per hour
C. up to 60 kilometers per hour
D. up to 800 kilometers per hour - Answers - D.
How long did the Proterozoic eon last?
A. approximately 2 billion years
B. approximately 500 million years
C. approximately 4 billion years
D. approximately 1 billion years - Answers - A.
How many seismograph stations are needed to locate the epicenter of an earthquake?
A. two
B. three
C. one
D. four - Answers - B.
How old are the oldest zircon minerals on Earth?
A. approximately 4 billion years old
B. approximately 500 million years old
