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Ch 6 Review Earthquakes
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Question 1 The place where slippage first occurs is called an earthquake’s _______. Focus Epicenter Magnitude intensity
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Question 1 The place where slippage first occurs is called an earthquake’s _______. a) Focus
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Question 2 The San Andreas Fault zone has formed where the edge of the Pacific plate is slipping Under the North American Plate Over the North American Plate South along the North American Plate North along the North American Plate
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Question 2 The San Andreas Fault zone has formed where the edge of the Pacific plate is slipping d) North along the North American Plate
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Question 3 The Pacific Ring of Fire is an earthquake zone that forms a ring around The Atlantic Ocean South America The Pacific Ocean North America
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Question 3 The Pacific Ring of Fire is an earthquake zone that forms a ring around c) The Pacific Ocean
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Question 4 When friction prevents the rocks on either side of a fault from moving past each other, the fault is said to be fractured subducting locked elastic
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Question 4 When friction prevents the rocks on either side of a fault from moving past each other, the fault is said to be c) locked
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Question 5 Deep-focus earthquakes usually occur in areas in which one plate Slides past another Remains stationary against another Moves apart from another Subducts under another
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Question 5 Deep-focus earthquakes usually occur in areas in which one plate d) Subducts under another
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Question 6 Ninety percent of continental earthquakes have
The same depth A shallow focus The same type of eruptions A deep focus
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Question 6 Ninety percent of continental earthquakes have
b) A shallow focus
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Question 7 How far below the earth’s surface do intermediate-focus earthquakes occur? 10 to 30 km 30 to 70 km 70 to 300 km 300 to 650 km
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Question 7 How far below the earth’s surface do intermediate-focus earthquakes occur? c) 70 to 300 km
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Question 8 Which type of earthquakes usually occurs farther inland than other earthquakes? Deep-focus Shallow-focus Intermediate-focus Microquakes
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Question 8 Which type of earthquakes usually occurs farther inland than other earthquakes? a) Deep-focus
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Question 9 Most earthquakes occur along or near the edges of the
North American Plate Earth’s oceans and lakes Eurasian Plate Earth’s lithospheric plates
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Question 9 Most earthquakes occur along or near the edges of the
d) Earth’s lithospheric plates
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Question 10 Where did the most widely felt series of earthquakes in the United States occur? Alaska California Hawaii Missouri
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Question 10 Where did the most widely felt series of earthquakes in the United States occur? d) Missouri
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Question 11 Which type of seismic wave travels the fastest? Tsunami
P wave S wave Surface wave
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Question 11 Which type of seismic wave travels the fastest? b) P wave
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Question 12 S waves can only travel through Gases Solids Liquids
Gases and liquids
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Question 12 S waves can only travel through b) Solids
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Question 13 What is the minimum number of seismograph stations a scientist must have data from in order to locate the epicenter of an earthquake? 1 2 3 4
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Question 13 What is the minimum number of seismograph stations a scientist must have data from in order to locate the epicenter of an earthquake? c) 3
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Question 14 A major earthquake has a magnitude of 2.5 to 3.5
Less than 2.5 7 or above
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Question 14 A major earthquake has a magnitude of d) 7 or above
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Question 15 How many separate sensing devices make up a seismograph? 1
2 3 4
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Question 15 How many separate sensing devices make up a seismograph?
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Question 16 Which of the following generally causes the most damage during an earthquake? Aftershock Primary wave Secondary wave Surface wave
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Question 16 Which of the following generally causes the most damage during an earthquake? d) Surface wave
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Question 17 Tsunamis result from earthquakes with epicenter located
On the ocean floor In loose soil Along coastlines In continental faults
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Question 17 Tsunamis result from earthquakes with epicenter located
a) On the ocean floor
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Question 18 What is a tsunami? A deep-focused earthquake
A shallow-focus earthquake A type of seismic wave A giant ocean wave
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Question 18 What is a tsunami? d) A giant ocean wave
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Question 19 Landslides on the seafloor are most likely to produce
Tsunamis Fault zones Seismic gaps Elastic rebounds
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Question 19 Landslides on the seafloor are most likely to produce
a) Tsunamis
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Question 20 A seismic gap is a region in which
There are no seismographs Tsunamis never occur A fault is locked Only deep-focus earthquakes occur
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Question 20 A seismic gap is a region in which c) A fault is locked
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Question 21 During an earthquake, a person is most likely to be safe in A car An open field A cellar A building
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Question 21 During an earthquake, a person is most likely to be safe in b) An open field
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