Stress & Faults
Measuring Earthquakes
Monitoring Earthquakes
Earthquake Safety
Random Section Questions
100
Because stress is a force it adds _________ to a rock
Energy
100
The first wave to arrive during an earthquake that acts like an accordion...
Primary waves
100
Which type of fault-monitoring device is most like a carpenters level?
Tiltmeter
100
The best way to protect yourself in an earthquake is to...
Drop cover and hold
100
What type of earthquake wave can travel through both liquids and solids?
Primary Waves
200
In a normal fault, the part of the fault that lies below the other part is called the...
Footwall
200
The waves that produce the most damage..
Surface waves
200
Which type monitors both vertical and horizontal movement of faults?
GPS Satellite system
200
Water approaching shore as the result of an earthquake is called..
A tsunami
200
During an earthquake, seismic waves move outward from the ________ in all directions.
focus
300
A force that acts on a rock to change its shape or volume is called...
stress
300
Waves that vibrate both up and down as well as side to side...
Secondary waves
300
Which device measures only horizontal movement in faults?
Creep meter
300
What causes damage to homes days or months after a large earthquake?
Aftershock
300
Which fault monitoring device can detect even the tiniest of movements along the crust?
Laser-ranging devices
400
Which type of stress produces reverse faults?
Compression
400
Three different scales used to measure earthquakes
Richter, Mercalli, Moment Magnitude
400
Why is it difficult for scientists to predict earthquakes?
Inconsistency within faults and stress
400
What do we call a building designed to reduce the amount of energy that reaches the building during an earthquake?
A base-isolated building
400
The land between two normal faults moves upward to form a...
Fault-Block Mountain
500
List all 3 types of stress, draw them, and tell how they change the shape of the rock.
Stress- stretches Compression- squeezes Shearing- causes slipping between masses of rocks
500
Explain the difference between each type of scale use to measure earthquakes
Richter only good for small and close, Mercalli gives damage at a specific location, Moment magnitude tells us total energy and is most used.
500
Draw a seismograph and label the wire, rotating drum, pen, weight, and ground motion.
Section 3 Packet
500
What is liquefaction?
The process in which the violent shaking of an earthquake turns soft soil into liquid mud.
500
What is the name of the fault line in California that the video discussed could potentially create the "Big One" in terms of Earthquakes?
San Andreas Fault
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