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 inside the Earth in an earthquake.
What is the focus?
This scale will tell how much earthquake damage was done to homes and other buildings
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 on Earth's surface. Most of earthquake damage occurs here.
What is the epicenter?
This instrument constantly records ground movement in the earth used by seismic waves
seismograph
Forces or stresses that act to pull an object or substance such as rock.
Tension
Earthquakes occur along a fault in this layer of the earth.
What is the Lithosphere (Crust)?
These seismic waves usually cause the most damage of all 3 types of seismic waves.
What are surface waves?
Earthquakes occur along these areas between pieces of the Earth because their slow movement causes large amounts of stress to build up over time.
What are plate boundaries?
The minimum number of station readings needed to locate an earthquake's epicenter.
What is 3?
What is the difference between an anticline and syncline fold?
anticline goes up like the letter A and syncline forms a valley form
This type of fault is found where rocks are pulling apart resulting in the footwall moving up and the hanging wall moving down
What is a Normal Fault?
These seismic waves move fast and arrive first:
P waves
This is a series of low-frequency shock waves, working like sound waves, traveling through the earths crust.
Earthquake
WILDCARD! DOUBLE THE POINTS!
The risk of earthquakes is high along the Pacific coast of the United States because
That's where to plates meet: Pacific and North American plates
The block of rock that lies above a fault where miners from long ago would hang their lanterns is called the ____________________.
Hanging wall
At this type of fault, the footwall moves down and the hanging wall moves up.
What is a Reverse Fault?
The direction(s) that seismic waves could travel when an earthquake occurs.
What is in all directions?
Which type of stress force produces reverse faults?
What is compression
This scale measures the total energy released by an earthquake
Moment Magnitude Scale
The type of pressure that pushes together while at the same time slips or slides in opposite directions is called
Shear tension
The boundary between two tectonic plates that are moving toward each other and often becomes the location of subduction or the building of mountain ranges
What is a convergent boundary?
Forces or stresses that act to squeeze or crush an object or substance such as rocks.
What is compression?
The land between two normal faults is pulled down by gravity and the upward amount that is left creates what landform?
fault block mountain
This scale measures the strength and size of an earthquake's seismic waves is called
Richter Scale
The block of rock that lies below a fault where miners from long ago would stand is called the ____________________.
Footwall
The boundary between two tectonic plates that are moving away from each other
What is a divergent boundary?
These waves arrive second
Secondary Waves
Your Empire crumbles in an earthquake.
You lose 700 points :(
The measure of the earthquake's size and strength is
Magnitude
What happens when friction and tension between the opposite sides of a fault is high
an earthquake occurs.