It is not my fault
The crack in the earth's crust where stress is suddenly released causing an earthquake.
What is a fault?
These seismic waves can travel through all of the earth's layers.
What are P-waves (Primary waves)?
Where rocks first begin to move in an earthquake.
What is the focus?
Which scale would most likely be used to tell how much earthquake damage was done to homes and other buildings?
What is the Mercalli scale
Earthquakes are caused when too much of this has built up in rocks and they can no longer handle it.
What is stress?
At this type of fault, tectonic plates scrape past each other at a transform boundary.
What is a strike-slip fault
These seismic waves cannot travel through the liquid outer core of the earth.
What are S-waves (Secondary waves)?
The name of the location directly above the focus.
What is the epicenter?
This instrument constantly records ground movement in the earth.
What is a seismograph?
A wall of water created when an earthquake occurs in the ocean floor.
What is a Tsunami?
Earthquakes occur along a fault in this layer of the earth.
What is the Lithosphere (Crust)?
These seismic waves usually cause the most damage.
What are surface waves?
Most earthquakes occur along these areas because their slow movement causes large amounts of stress to build up over time.
What are plate boundaries?
The minimum number of stations needed to locate an earthquake's epicenter.
What is 3?
A fault that is formed when compression causes the hanging wall to move over the foot wall is called a(n) ____________________.
What are reverse faults?
This type of fault is found where rocks are pulling apart resulting in one block of rock sliding downward in relation to the other.
What is a Normal Fault?
a series of low-frequency shock waves, somewhat like sound waves, traveling through the earths crust
What are earthquakes?
During an earthquake, the most damage occurs here.
What is at the epicenter?
What does a seismograph record?
What is the ground movements caused by seismic waves
The block of rock that lies above a fault is called the ____________________.
What is hanging wall?
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.
What is a Reverse Fault?
The direction(s) that seismic waves travel when an earthquake occurs.
What is in all directions?
Which type of stress force produces reverse faults?
What is compression
The rating system that estimates the total energy released by an earthquake is called the
What is the Moment Magnitude Scale?
The scale that measures the strength of an earthquake based on seismic waves and movement along a fault is called the ____________________ scale.
What is richter scale?
The boundary between two tectonic plates that are moving toward each other often locations of subduction and mountain building
What is a convergent boundary?
Forces or stresses that act to squeeze or crush an object or substance
What is compression?
The land between two normal faults moves upward to form a
what is fault block mountain
The risk of earthquakes is high along the Pacific coast of the United States because
What is that’s where the Pacific and North American plates meet.
The stress force that pulls on the crust where two plates are moving apart is called ____________________.
what is tension?
The boundary between two tectonic plates that are moving away from each other
What is a divergent boundary?
forces or stresses that act to pull an object or substance apart
What is tension?
Which of the following can cause damage days or months after a large earthquake?
What is aftershock
A measure of the earthquake's energy
What is the magnitude?
What happens when friction between the opposite sides of a fault is high?
The fault locks, and stress builds up until an earthquake occurs.