It is not my fault
The crack in the earth's crust where stress is suddenly released causing an earthquake.
fault
These seismic waves can travel through all of the earth's layers or any state of matter:
P-waves (Primary waves)
In which part of an earthquake is where the rocks first begin to move?
focus
This is the scale used to measure the actual amount of seismic activity or magnitude of an Earthquake.
Richter Scale
Earthquakes are caused when too much of this has built up in rocks and they can no longer handle it.
pressure/stress
At this type of fault, tectonic plates scrape past each other at a transform boundary.
strike-slip fault
These seismic waves travel only through solids.
S-waves (Secondary waves)
The name of the location directly above the focus.
epicenter
This instrument records earthquake waves.
seismograph
An enormous wave created when an earthquake occurs in the ocean floor is called a ____________.
Tsunami
Earthquakes occur along a fault in this layer of the earth.
Lithosphere
These seismic waves travel only across the the Earth's surface and usually cause the most damage.
surface waves
Most earthquakes occur along these areas because their slow movement causes large amounts of stress to build up over time.
plate boundaries
The scale used to measure an earthquake's intensity based on eyewitness observations.Based on destructions.
Mercalli scale
Most injuries and deaths from an earthquake occur due to the collapsing of these structures.
buildings
This type of fault is found where rocks are pulling apart resulting in one block of rock sliding downward in relation to the other.
Normal Fault
Definition: A movement or trembling of the ground that is caused by a sudden release of energy along a fault move:
earthquakes
The closer a city is to the __________ of an earthquake, the more damage there will be.
epicenter
When an earthquake increases by 1 on the Richter scale (i.e. - from 3 to 4), how much larger does the magnitude get?
10x
Earthquakes that occur after an initial earthquake are called __________.
Aftershocks
At this type of fault, one block of rock slides upwards in relation to the other one as a result of them being pushed together.
Reverse Fault
Type of waves that travel through the ground with horizontal motion (like an accordion)
P waves
The tremors that follow major earthquakes as the Earth readjusts.
aftershocks
If an earthquake records a magnitude of 9.5, is this measurement recorded in the Mercalli Scale or Richter Scale
Richter
The location of the most powerful recorded earthquake in North America occurred in this state.
Alaska
The type of boundary in which two tectonic plates are moving toward each other - often locations of subduction and mountain building
convergent boundary
Types of waves that move up and down and back and forth:
surface waves
Definition: Vibrations that causes different types of ground motion
seismic wave
The range of the Mercalli Scale is ________.
I-XII
This occurs when loose, wet soil turns into liquid. It can cause sinkholes.
Liquefaction
The type of boundary in which two tectonic plates are moving away from each other
divergent boundary
When 3 circles meet to give the epicenter is called
triangulation
Definition: A break in the Earth's Crust is called a _________.
Fault
Definition: A measure of the earthquake's energy (or impact)
magnitude
Name the place where a Powerful earthquakes occurred in South America:
Chile
The most dangerous type of fault is the
strike slip fault
Scientists use this to determine the distance of a seismic station from the epicenter.
The difference in arrival time of P and S waves.
The boundary that causes earthquakes when plates slide past each other horizontally; like the San Andreas Fault
transform boundary
What scale is being used if a seismologist says that an earthquake has been felt by few people in a specific location?
Mercalli scale
San Andrea's fault is the result of which boundary
Transform Boundary