 Strike slip faults are caused by shear forces.
 At a transform plate boundary, plates grind past each other.
 At a divergent plate boundary, plates move apart.
 The force that causes part of the crust to become shorter and
thicker is compression.
 The force that causes part of the crust to become shorter and
thicker is compression
 When the hanging wall of a fault slips down with respect to the
footwall, the result is a normal fault.
 The three main types of stress in rock are shearing, tension, and
compression
 The three main types of plate boundaries are divergent,
convergent, and transform
 P-waves travel faster through cracks
 The modified Mercalli scale measures the intensity of an
earthquake.
 The Richter scale is based on measurements of the amplitude of a
seismic wave.
 Three commonly used methods of measuring earthquakes are the
(scales) Mercalli, Richter, moment magnitude scale
 These statements are in order they will be mixed up on the test:
____ The rocks stretch and bend.
____ The rocks snap, releasing energy.
____ The rocks stretch beyond their elastic limit.
____ As the tectonic plates move, the rocks have tension
forces acting on them.
 Three main categories of seismic waves are p-waves, s-waves, and
surface waves.
 Earthquake waves are called seismic waves.
 Stress will build until an earthquake occurs if friction along a
fault is high.
 The largest waves on a seismogram are surface waves.
 To estimate the total energy released by an earthquake, a
geologist should use the moment magnitude scale.
 What does the height of the jagged lines on a seismogram
indicate? The height of the jagged lines in a seismogram indicates
how severe or close an earthquake is.
 How can homes and other structures be protected from
liquefaction? New homes and other structures built on soft
ground should be anchored to solid rock below the soil.
 The layer on which the tectonic plates move is the asthenosphere.
 The lithosphere is made up of the crust and the upper most part
of the mantle.
 Which of the earth’s internal layers has the consistency of salt
water taffy (soft and gooey) asthenosphere
 The correct order of layers in the Earth from the surface to the
center is crust, lithosphere, asthenosphere, lower mantle, outer
core, inner core
 The lithosphere is broken down into about 13 large sections called
tectonic plates