Cards in this guide (21)
2 A seismogram show is that P waves travel
It shows that P waves travel faster than S waves.
How did opponents of continental drift account for the existence of similar fossils on widely separated continents
migration across land bridges
What can a travel time graph be used to find
A travel time graph can be used to find the distance from the
epicenter of an earthquake.
How much of an increase in wave amplitude is seen from an earthquake measuring 5.4 on the Richter scale compared to one measuring 4.4
Violent shaking from an earthquake can cause soil and rock on slopes to move and cause a
Violent shaking from an earthquake can cause soil and rock on
slopes to fail and cause a landslide
How many earthquakes have occurred in Hawaii
Which seismic waves compress and expand rocks in the direction the waves travel
The scale most widely used by scientists for measuring earthquakes is the
Over time sand dunes tend to migrate
in the same direction as that the wind blows
The tsunami warning system protects coastal areas around the
A succession of ocean waves set in motion by a submarine earthquake
The succession of waves is called a tsunami.
Which was not used in support of the continental drift hypothesis
composition of meteorites
Which is not a factor in calculating the moment magnitude of an earthquake
magnitude of past earthquakes in the area
What is the difference of the P waves and S waves used to locate an earthquake's epicenter
P waves, also called primary waves, are the first waves to be
registered on a seismograph. The S waves, or secondary waves, are
the second and slower wave to register on the seismograph. When
locating an earthquakes epicenter seismologists take the first
reading of the P wave, and then take the reading from the S wave.
At the station of where the earthquake was recorded, seismologists
draw a large circle from where the earthquakes epicenter could be.
TO exactly located the earthquakes epicenter there needs to be at
least 3 dfferent staions where the earthquake hit to determine its
epicenter using the S and P time interval.
Which area would likely suffer the most damage from magnitude 6.8 earthquake
area with older brick structures
Why was Alfred wegeners idea that tidal forces might cause continental drift refuted as impossible
It would stop earth's rotation.
Showed that the tidal forces needed to move continents would
stop earths rotation.
What was the reason wegeners continental drift hypothesis was rejected
His evidence was incorrect.
The trace that records an earthquake from seismic instruments is called a
Is this statement true or false P waves and S waves are two kinds of seismic waves.
The Richter magnitude of an earthquake is determined from the
measurement of the amplitude of the largest seismic waves
How do ancient glacial deposits in Africa India Australia and South America support the idea of continental drift