Earthquakes Answers
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Which statement describes the focus of an earthquake?
A
It creates stress in rock.B
It develops in the lithosphere.C
It lies above the surface where rock breaks.D
It begins about 5 kilometers below Earth’s surface.2
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Which statement describes surface waves?
A
They arrive before S waves.B
They travel faster than P waves.C
They are produced by P and S waves.D
They travel deep below Earth’s surface.3
Which of these factors is involved in earthquake formation?
A
plates getting largerB
rocks breakingC
stress that decreasesD
faults that remain stationary4
Which phrase describes a feature of an earthquake’s epicenter?
A
starting point of an earthquakeB
place around the center of an earthquakeC
region directly above the focusD
point about 100 kilometers deep in the lithosphere5
Which statement describes the Mercalli scale?
A
This scale measures seismic waves based on their size.B
This scale rates an earthquake according to how much damage it causes.C
This scale produces a single rating for earthquakes that reach the surface.D
This scale measures the magnitude of an earthquake based on the size of seismic waves.6
Which statement describes the Richter scale?
A
It cannot account for fault movement during an earthquake.B
It measures large earthquakes far from the seismograph.C
It estimates the total energy released from an earthquake.D
It measures magnitude based on the size of seismic waves.7
Which statement describes a seismograph?
A
It has a flat graphing surface.B
It is used to locate an earthquake’s focus.C
It uses a needle on graph paper to measure seismic wave activity.D
It measures data used to find the difference between the arrival times of surface waves.8
Which strategy do geologists use to locate the center of an earthquake?
A
They only analyze local data.B
They collect data from seismographs.C
They measure arrival times of surface waves.D
They draw squares on maps for measurements.9
The diagram shows circles drawn by geologists trying to determine the location of an earthquake’s epicenter.
A
location of an epicenterB
location of a focusC
location of a seismographD
location of a wave10
What happens when stress builds at faults?
A
Energy is absorbed.B
Rock can bend and break.C
Plates form on the lithosphere.D
Earthquakes develop at Earth’s surface.Did you find these answers helpful?
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