Show:
Forces in the Earth's Crust
Seismic Waves
Measuring and Monitoring Earthquakes
Earthquake Damage
Landforms
100
This type of stress causes two rocks to slip past one another.
shearing
100
What are the 3 types of seismic waves?
S-Waves, P-Waves, and Surface Waves
100
What does a seismograph do?
records seismic waves
100
The higher the _______________of an earthquake, the more damage it causes.
magnitude
100
What is a high, level plain that has been elevated over time?
plateau
200
In this kind of fault, the hanging wall moves up relative to the footwall.
reverse fault
200
What is the slowest type of wave?
surface waves
200
What is the name of the recording that is produced by a seismograph?
seismogram
200
What is the area underground where the seismic waves of an earthquake originate?
Focus
200
How is a valley formed?
By tension when a fault causes a block of crust to move downward while another block of crust moves upward.
300
What kind of stress causes a normal fault?
tension
300
What is the motion of a P wave?
Compress and Expand
300
What is the name of the process that scientists use to determine the epicenter of an earthquake?
Triangulation
300
What is the number of the greatest level of earthquake on the Mercalli scale?
XII or 12
300
What is the difference between a fold and a fault?
A fold is a bend in the earth's crust while a fault is a break in the earth's crust.
400
For each type of fault, label which plate boundary they occur at.
Normal Fault - Divergent Plate Boundary Reverse Fault - Convergent Plate Boundary Strike-Slip Fault - Transform Plate Boundary
400
What is the order of the arrival times of the different types of waves, from first to last?
p-waves, then s-waves, then surface waves
400
How is the modified Mercalli Scale different from the moment magnitude scale?
Modified Mercalli scale describes the damage of an earthquake based on people's observations. The moment magnitude scale estimates the total energy released by an earthquake.
400
Which earthquake would have more damage: A 5.0 magnitude or a 6.0 magnitude? How do you know?
6.0 magnitude because it releases more energy.
400
What is the difference between an anticline and a syncline?
An anticline folds upward, while a syncline folds downward.
500
For each type of stress, label which type of fault it creates.
Shearing - Strike-Slip Fault Compression - Reverse Fault Tension - Normal Fault
500
For each type of earthquake wave, describe its motion.
P-Wave: Compress and Expand S-Wave: Up and Down or Side to Side Surface Wave: Roll
500
Draw a picture that accurately shows where the epicenter, fault, and focus of an earthquake occur.
Varies
500
How is a tsunami formed?
an underwater earthquake
500
How are folded and fault-block mountains formed differently?
Folded mtns are formed from compression, while fault-block mtns are formed from tension.