It is not my fault
The crack in the earth's crust where stress is suddenly released causing an earthquake.
fault
These body waves (seismic waves) can travel quickly through both solid and liquid material in the Earth's interior.
P-waves (Primary waves)
The beginning point of an earthquake inside the earth.
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.
Energy/stress
At this type of fault, tectonic plates scrape/slide past each other at a transform boundary.
strike-slip fault
These body waves (seismic waves) travel slowly and only through solids.
S-waves (Secondary waves)
The name of the location directly above the focus.
epicenter
This instrument measures and records earthquake waves.
seismograph
In May 1980 an earthquake caused this WA volcano to erupt.
Mt. St Helens
Earthquakes occur along a fault in this layer of the earth.
Lithosphere
These seismic waves travel only across 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 destructions.
Mercalli scale
Most injuries and deaths from an earthquake occur due to the collapsing of these structures.
buildings/roads
This type of fault is found where rocks are pulling/separating 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:
earthquakes
3 causes of earthquakes
1.) A release of stored energy resulting from two plates colliding, separating or sliding.
2.) Molten rock moving under a volcano.
3.) Adding or removing large amounts of Earth.
The Richter Scale measures the _____or strength of the seismic wave of an earthquake.
True or False: Concrete reinforced with plastic rods is a common building material for earthquake stability design.
False: STEEL rods
At this type of fault, one block of rock slides upwards in relation to the other one as a result of them being pushed/ colliding together.
Reverse Fault
The point on the surface of the Earth directly above the focus.
An earthquake that occurs under or near the ocean causes a series of giant waves called this.
Tsunami
If an earthquake records a magnitude of 9.5, is this measurement recorded in the Mercalli Scale or Richter Scale?
Richter Scale
True or False: A building with sand or fill material has little stability.
True
The San Andreas is an example of this fault.
Strike-slip fault
These types of waves are produced when P and S waves reach the surface of the earth:
surface waves
Definition: Vibrations that causes different types of ground motion and flow from the focus.
seismic wave
Seismologists use a machine called a_____to detect time, and measure the movement of the Earth.
Seismograph
The theory the Earth's crust is made of moving plates is called.
Theory of plate tectonics
The three types of faults and the movement for each are...
Reverse, Normal, Strike-slip (Collide, Separate, Slide)
The fastest moving surface wave - zigzag pattern
Love Wave
Scientist who studies the movement of the Earth.
Seismologist
Which types of waves are used to calculate the location of the focus of an earthquake?
P and S waves (body waves)
The crust and upper area of the mantle consists of large pieces called.
Plates
Sea-floor spreading is result of this fault type.
Normal Fault
The two types of surface waves are.
Love Waves and Rayleigh Waves
Definition: A break in the Earth's Crust occurs at the
Fault line
True or False: A seismograph measures and records up-down, east-west, and north-south movements?
True
This is the most seismically and volcanically active zone in the world. Hint:Pacific Ocean
The Ring of Fire