Earthquake 1.0 M
the origin of motion below the surface along the fault caused by stress?
What is focus?
This wave is the first to arrive, and travels through solids, liquids, & gases
What is primary wave?
Humans are not able to feel earthquakes with a magnitude less than this.
2.0
When tectonic plates slide past each other?
What is transform?
This is where most of the world's volcanoes and earthquakes are located.
What is Ring of Fire?
The point on the Earth's surface directly above the focus
What is Epicenter?
This is the second wave to arrive, and it only travels in solids.
What is secondary wave?
This is the rhythmic sloshing of water in lakes
seiche
This type of plate movement creates a subduction zone.
What is convergent?
This type of tectonic plate is more dense.
Oceanic plate
This can be triggered by an earthquake, or a landslide.
tsunami
This wave is actual ground movement or rolling motion, is the most damaging, and is the slowest seismic wave, and it can't travel through liquids.
What is surface wave?
Describe 2 earthquake hazards.
What is: liquefaction, tsunami, landslide, ground shaking, ground displacement, flooding, fire
This part of earth's interior is all liquid.
What is outer core?
This person proposed the idea of continental drift.
Who is Alfred Wegener?
This occurs when vibrations of an earthquake causes soil/dirt to lose strength and flow.
What is liquefaction?
This type of seismic wave creates a "push-pull motion" (compress/expand)
What is primary wave?
This was the older method of measuring earthquake size.
What is the Richter Scale?
Convection in Earth's mantel causes this.
What is plate motion?
Oceanic crust is created at this plate boundary.
What is divergent?
Vibrations (earthquakes) occur as the deformed rock "springs back" to its original shape.
What is elastic rebound?
This instrument records seismic waves.
What is seismograph?
This measuring method for recording earthquake size is the one scientists use today, and it measurers larger earthquakes better.
What is moment magnitude?
Volcanoes are found at these 2 types of plate boundaries.
What is convergent and divergent?
This type of seismic wave only travel around the surface of the planet.
What is surface waves?