# Shared Flashcard Set

## Details

Earthquakes
sas
22
Science
02/23/2009

Term
 Earthquake
Definition
 The shaking and trembling that results from the movement of rock beneath Earth's surface.
Term
 Stress
Definition
 A force that acts on rock to change its shape or volume.
Term
 Shearing,Tension, and Compression
Definition
 What are the 3 types of stress?
Term
 Shearing
Definition
 Stress pushing rock in opposite directions
Term
 Tension
Definition
 Stress pulling or strectching rock, making it thinner in the middle.
Term
 Compression
Definition
 Stress that squeezes rock until it folds or breaks.
Term
 Deformation
Definition
 And change in the volume or shape of Earth's crust.
Term
 Srtike-slip,normal,and reverse faults.
Definition
 What are the three types of faults?
Term
 Strike-slip fault
Definition
 Rocks on either side of the fault slip past each other sideways with up or down motion.
Term
 b.Shearing
Definition
 What is the Strike-slip fault cause by?a.Tensionb.Shearingc.Compression
Term
 Normal fault
Definition
 The fault is at an angle and the footwall is higher than the hanging wall.
Term
 c.Tension
Definition
 What is the normal fault caused by?a.Compressionb.Shearingc.Tension
Term
 Reverse fault
Definition
 The same structure as a normal fault but the hanging wall is higher than the footwall.
Term
 b.Compression
Definition
 What is a reverse fault caused by?a.Tensionb.Compressionc.Shearing
Term
 Folds
Definition
 Bends in rock that form from compression.*What is another word for bend?*
Term
 Plateau
Definition
 A large area of flat land high above sea level.
Term
 Seismic Waves
Definition
 Vibrations that travel through Earth Earth carrying the energy released during an earthquake.
Term
 1.Primary"P Waves"2.Secondary Waves"S Waves"3.Surface waves
Definition
 What are the three types of seismic waves?Two of them have nicknames,what are they?
Term
 Seismograph
Definition
 Records the ground movements caused by seismic waves as they move through the Earth.*Have of this word has something to do with the word "rercord"***Hint:We're learning about this in Math**
Term
 Moment Magnitude Scale
Definition
 A rating system that estimates the total energy released by an earthquake.**Hint:This term is three whole words**
Term
 Any of the following would work:1.Homes/buildings destroyed2.Fatalities/injuries3.Cars/roads damaged4.Landslides & Avalanches5.Fires6.Tsunamis7.Water mains fractured
Definition
 Name 5 different damages an earthquake can do.
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