Earthquakes - General
It is composed of the oceanic crust, the continental crust, and the rigid underlying upper-uppermost portion of the mantle.
What is the lithosphere?
The seismic waves that first arrive at a seismic station?
What are P-waves? (also called Primary waves)
These are the two types of seismic waves that travel through the Earth's interior (body waves).
What are Primary (P) and Secondary (S) waves?
The instrument that records seismic vibrations
What is the seismograph?
This type of stress pushes land together and creates landforms like folded mountains
What is compression?
Vibrations within the Earth produced by a rapid release of energy.
What are seismic waves?
These seismic waves arrive second at a seismic station.
What are S-waves? (also called the secondary waves)
The location of the actual source of an earthquake?
What is the focus (or hypocenter) of an earthquake?
The paper (or digital) record of the vibrations of Earth's movement.
What is the seismogram?
This type of stress pulls land apart and creates landforms like rift valleys
What is tension?
The study of earthquakes.
What is seismology?
The are the seismic waves that arrive last at a seismic station and cause the most surface damage?
What are surface waves?
The location on the Earth's surface that lies directly above the actual source of an earthquake?
What is the epicenter?
This single number is assigned to an earthquake based on it's size. The larger the number the larger the earthquake.
What is magnitude?
The San Andreas fault is a transform boundary that has this type of stress.
What is shearing?
What are two reasons why you may feel vibrations coming from the earth?
Volcanic eruption or earthquake
These seismic waves travel in a push and pull fashion compressing one particle into another, then another, and another, etc. in the direction of movement.
How do P-waves travel through the Earth?
The minimum number of seismic stations needed to locate an earthquake's epicenter?
Why do you need three seismic stations?
The height of the waves on a seismogram are used for what?
To determine how large the earthquake was.
A normal fault occurs at what type of plate boundary and under what type of stress.
At a divergent boundary and under tension.
These seismic waves vibrate horizontally at right angles or up and down to the direction of wave motion.
What are Secondary waves?
Using those 3 seismometer readings and the circluar rings they create, where would the earthquake be located
Where the 3 rings overlap.
The dangerous coastal phenomenon caused by a sudden release of energy on the ocean floor?
What is a tsunami?
A reverse fault occurs at what type of plate boundary and under what kind of stress?
A convergent boundary and with compression