Waves
The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion are called
P Waves
Shearing creates ____________________ faults, like the San Andreas fault in California.
strike-slip
Stress that pushes a mass of rock in two opposite directions is called
shearing
An upward fold in a rock is called a ______________
anticline
A seismograph uses a _______________ to record the drum’s vibrations.
pen
The seismic waves that travel along Earth’s surface and produce the most severe ground movements are called ____________________.
surface waves
In a ________________________ fault, the rocks on either side of the fault slip past each other sideways.
strike-slip
Which type of stress force produces reverse faults?
compression
A fold in rock that bends upward into an arch is called a(n)
anticline
Geologists ____________ predict exactly where and when earthquakes will occur.
cannot
__________________are the first seismic waves to arrive at a given location.
P waves
In a normal fault, the part of the fault that lies below the other part is called the
foot wall
The stress force that pulls on the crust where two plates are moving apart is called ____________________.
tension
A large area of flat land elevated high above sea level is called a
plateau
The point beneath Earth’s surface where rock breaks under stress and triggers an earthquake is called the
focus
Which of the following can cause damage days or months after a large earthquake?
after shock
In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little
up and down motion
The squeezing together of rocks by stress is called_____________
compression
The block of rock that lies above a fault is called the ____________________.
hanging wall
The rating system that estimates the total energy released by an earthquake is called the
moment magnitude scale