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Earthquakes and Seismic Waves Flashcards | StudBud
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Earthquakes and Seismic Waves
Earthquakes and Seismic Waves
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1
What type of stress is shown in the picture below?
compression
normal
shearing
tension
2
How is the energy released by an earthquake related to its moment magnitude?
less energy, greater magnitude
it is the same
more energy released, less magnitude
more energy released, greater the magnitude
3
What type of stress is shown in the picture below?
tension
normal
compression
shearing
4
Seismic waves are _________ that are similar to sound waves.
sounds
vibrations
sounds
waves
5
When movement occurs along a normal fault, the hanging wall _____________________.
moves up
stays the same
slips downward
6
The seismic waves that move fastest are ___________.
Seismic waves
S waves
P waves
Surface waves
7
In a reverse fault, the hanging wall moves _________ and the footwall moves _________.
down ; up
up ; down
down ; down
up ; up
8
A __________ is a large, flat, elevated area of land.
Hill
Grassland
Mountain
Plateau
9
Can geologists use data from only two seismographic stations to locate an the epicenter?
No
Yes
10
Geologists use the moment magnitude scale to rate the total ________ released by an earthquake.
energy
waves
focus
damage
11
Rocks on either side of a _________ fault slip past each other with little up and down motion.
Normal
Strike-slip
Reverse
12
Two examples of mountain ranges in the world that have been caused by folding are _______.
Himalayas & Appalachian
Rockies & Appalachian
Andies & Rockies
Himalayas & Rockies
13
Which force pulls on the crust and thins rock in the middle?
shearing
compression
tension
normal
14
What type of stress is shown in the picture below?
tension
normal
compression
shearing
15
The point on Earth's surface directly above an earthquake's focus is called _________.
the focus
vibration
the epicenter
tension
16
Which scale rates earthquake damage at a particular location?
Modified Mercalli
focus
moment magnitude
Richter
17
When enough ________ builds up in rock, the rock breaks, creating a fault.
stress
rock
tension
18
What is one way plateaus can form?
pop up out of ground
they just appear
forces in Earth's crust push up large flat block of rock
when plates collide
19
Which force squeezes Earth's crust to make the crust shorter and thicker?
shearing
normal
compression
tension
20
The __________ of an earthquake is the point where rock under stress begins to break or move.
focus
vibration
epicenter
wave