Show:
Forces in the Earth's Crust
Seismic Waves
Measuring and Monitoring Earthquakes
Earthquake Damage
Miscellaneous
100
This type of stress causes two rocks to slip past one another.
What is shearing?
100
These are the three types of seismic waves.
What are s-waves, p-waves and surface waves?
100
A seismograph does this.
What is records seismic waves?
100
The higher the magnitude of an earthquake, the higher the _______________ caused.
What is damage?
100
Three seismographs are needed to locate this.
What is the epicenter?
200
In this kind of fault, the hanging wall moves up relative to the footwall.
What is a reverse fault?
200
This is the slowest type of wave.
What are surface waves?
200
This is the name of the waves drawn on paper by a seismograph.
What is a seismogram?
200
This is the area underground where the seismic waves of an earthquake originate.
What is the focus?
200
Greatest earthquake risk is here.
What is near or on plate boundary?
300
This is a large area of flat land elevated high above sea level.
What is a plateau?
300
These types of waves cause the most destruction.
What are surface waves?
300
This moves on a seismograph.
What is the drum which moves the pen.
300
This is the number of the greatest level of earthquake on the Mercalli scale.
What is XII?
300
These three states of the US have the highest earthquake risk.
What are California, Alaska and Hawaii?
400
This is an upward fold in rock.
What is an anticline?
400
What is the order of the arrival times of the different types of waves, from first to last.
What are p-waves, then s-waves, then surface waves.
400
These are three types of scales for measuring earthquakes.
What are Mercalli, Richter and moment magnitude scales?
400
These are the signs of a level XII earthquake.
What are surface cracks and severe structural damage?
400
The point on Earth's surface directly above an earthquake's focus is called.
What is epicenter?
500
These are the three types of stress.
What are shearing, compression and tension?
500
This is the motion that surface waves make.
What is up and down and side to side?
500
Around 1,300 buildings collapsed, another 2,400 structures were damaged during the earthquake. This is observations which dictate what scale?
What is Modified Mercali Scale?
500
This is caused by displaced water when the sea-floor shifts during an earthquake.
What is a tsunami?
500
This force squeezes Earth's crust to make the crust shorter and thicker.
What is compression?