Show:
Stress
Faults
Seismic Waves
Rating Scales
Mixed Bag
100
Stress that pushes a mass of rock in two opposite directions.
What is shearing?
100
In a normal fault, the part of the fault that lies below the other part is called this.
What is the hanging wall?
100
The type of seismic waves that occur first and move by compressing and expanding the ground.
What are P-waves (primary waves)?
100
This system is a rating of an earthquake's magnitude based on the size of the earthquake's seismic waves.
What is the Richter Scale?
100
The point beneath earth's surface where rock breaks under stress and triggers an earthquake.
What is the focus?
200
Stress that produces reverse faults.
What is compression?
200
In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little of this motion.
What is up and down motion?
200
S-waves are also known as this.
What are secondary waves?
200
This scale is used to tell how much damage an earthquake has done to homes and other buildings.
What is the Mercalli Scale?
200
A fold in rock that bends downward to form a valley.
What is a syncline?
300
A normal fault is created by this type of stress.
What is tension?
300
In a reverse fault, this part moves up relative to the other part.
What is the hanging wall?
300
This type of seismic wave is the slowest of all three.
What are surface waves?
300
This system is used to estimate the total energy released by an earthquake.
What is the Moment Magnitude Scale?
300
A large area of flat land elevated high above sea level.
What is a plateau?
400
A strike-slip fault is created by this type of stress.
What is shearing?
400
This type of fault has neither a hanging wall nor a footwall.
What is a strike-slip fault?
400
Seismic waves carry the energy of an earthquake in this direction. (Hint: relative to the focus)
What is away from the focus?
400
This device measures ground movements caused by seismic waves.
What is a seismograph?
400
A fold in rock that bends upwards into an arch.
What is an anticline?
500
Because stress is a force, it adds this to rock.
What is energy?
500
This type of fault is often found at divergent plate boundaries.
What is a normal fault?
500
This type of wave can travel through both solids and liquids.
What are P-waves?
500
The measurement of an earthquake's strength based on seismic waves and movement along faults.
What is magnitude?
500
The landform that is created when a piece of land between two normal faults moves upwards.
What is a fault-block mountain?