Show:
Causes
Seismic Waves
Destruction
Vocabulary
Plate Tectonics
100
This is where one plate goes under another.
What is a subduction zone?
100
This is the form in which an earthquake's energy is transferred through the earth.
What are seismic waves?
100
Moment Magnitude Scale
What is the scale scientists use to rate earthquakes based only on their strength?
100
A fracture in rock layers where they can move up, down, or sideways.
What is a fault?
100
A boundary where plates are moving towards one another.
What is a convergent boundary?
200
This is what builds up over time as plates move.
What is stress?
200
The fastest type of seismic waves that reaches seismic stations first.
What are primary waves (P-waves)?
200
This scale is used to rate earthquakes based on their amount of energy released, magnitude, and amount of damage caused.
What is the Richter scale?
200
Liquefaction
What is the changing of loose, wet soil or sand into a liquid due to the shaking of the ground.
200
The San Andreas fault line runs along this.
Where a transform boundary can be seen in California?
300
Living in California puts one at great risk for being in an earthquake due to their location.
What is along a plate boundary or fault line?
300
These waves cannot go through the outer core due to their inability to transfer through liquid.
What are secondary (S-waves)?
300
Loose land is affected by earthquakes and can be displaced from the shaking of the earth.
What is a landslide?
300
The epicenter is on Earth's surface directly above this point where the earthquake occured.
What is focus?
300
Convection currents in the asthenosphere.
What is the reason for plate movement?
400
This is when a plate finally has reached is threshold for stress and an earthquake occurs.
What is the sudden release of energy?
400
The reason why surface waves are most destructive is because of their path of motion.
What is a circular or transverse path?
400
Scientists and architects can work together to make buildings that can withstand some ground movement by using cross braces and sheer cores.
What is a way infrastructure can be designed to withstand earthquakes?
400
Small earthquakes that occur after the larger initial earthquake.
What is an aftershock?
400
He founded the theory of continental drift based on evidence he found for the supercontinent Pangaea.
Who is Alfred Wegener?
500
The cause of an earthquake.
What is the sudden movement of rock due to release of stress?
500
These waves move in a longitudinal manner by compression and expansion.
What are P-waves?
500
Most of the destruction from Japan's killer earthquake was due to the immense waves that flooded the cities.
What is a tsunami?
500
Seismologists use this process to find the exact location of an earthquake.
What are triangulation?
500
A trench is formed here.
What is a subduction zone?