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Earthquakeas
Test Description: Earthquakes are natural vibrations of the ground, some of which are caused by movement along fractures in the Earth's crust.
Instructions: Answer all questions to get your test result.
1) A ____ fault forms as a result of horizontal compression.
A
normal
B
reverse
C
blind
D
strike-slip
2) On a seismometer, vibrations of the ground do not move the ____.
A
spring
B
recording drum
C
suspended mass
D
frame
3) What is true about the focus?
A
It is the point where the most surface damage will occur.
B
It is the point where the surface waves originate and spread out.
C
It is the point of failure where the waves originate.
D
It is the point where the waves are attracted.
4) Deaths associated with earthquake deaths in sloping areas can result from ____.
A
formation of fault scarps
B
tsunamis
C
surface ruptures
D
landslides
5) The strain which causes a material to pull apart is known as ____.
A
tension
B
shear
C
compression
D
stress
6) What keeps the stable part of this seismometer from moving during an earthquake?
A
gravity
B
its location
C
its mass
D
inertia
7) Which part of the seismometer does not shake during an earthquake?
A
the rotating drum
B
the pendulum and pen
C
the spring
D
the frame
8) The San Andreas Fault, a result of horizontal shear, is a ____ fault.
A
blind
B
normal
C
reverse
D
strike-slip
9) P-waves and S-waves are also known as ____.
A
first waves
B
body waves
C
ground waves
D
surface waves
10) A numerical scale of earthquake magnitude that takes into account the size of the fault rupture is the ____.
A
Richter scale
B
modified Mercalli scale
C
epicentral distance scale
D
moment magnitude scale
*select an answer for all questions
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