Earthquakes 2
Terms
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- exact location of an earthquake
- FOCUS
- location of the focus
- BELOW EARTH'S SURFACE
- location on the surface directly above origin of the earthquake
- EPICENTER
- origin of the earthquake
- FOCUS
- earthquake waves
- SEISMIC WAVES
- a shift in rocks deep below the surface
- EARTHQUAKE
- why earthquakes occur
- SHIFT IN LITHOSPHERIC PLATES DUE TO CONVECTION
- the instrument used to measure earthquake waves
- SEISMOMETER
- the record of earthquake waves
- SEISMOGRAM or SEISMOGRAPH
- three types of seismic waves
- S,P,L
- a line along earthquakes occur
- FAULT or FAULT PLANE
- a crack in the Earth's crust
- FRACTURE
- refers to the amount of energy
- MAGNITUDE
- scale of earthquake magnitude
- RICHTER SCALE
- refers to the effect of the energy released
- INTENSITY
- scale of earthquake intensity
- MERCALLI SCALE
- "P" waves
- PRIMARY
- first waves to arrive
- P or PRIMARY
- small waves
- P or PRIMARY
- longitudinal waves
- P or PRIMARY
- "S" waves
- SECONDARY
- second waves to arrive
- S or SECONDARY
- larger waves
- S and L
- transverse waves
- S and L
- waves that travel only through solid layers of Earth
- S or SECONDARY
- waves that can travel through solid or molten layers of Earth
- P or PRIMARY
- waves that only travel across the surface of Earth
- L or LOVE-RALEIGH
- very damaging waves
- L or LOVE-RALEIGH
- "L" waves
- LOVE-RALEIGH
- last waves to arrive
- L or LOVE-RALEIGH
- the process of using seismograms from 3 locations to determine epicenter location
- TRIANGULATION
- the amount of force applied
- STRESS
- the response to stress
- STRAIN
- rocks that bend under stress
- DUCTILE
- rocks that crack under stress
- BRITTLE
- the change occurring in rocks due to stress
- DEFORMATION
- the ability to bend or stretch without permanent change
- ELASTIC
- when stresses push together
- COMPRESSION
- when stresses pull apart
- TENSION
- when stresses pull opposite corners in opposite directions
- SHEARING
- fault related to shearing stress
- LATERAL or STRIKE-SLIP
- fault related to transform plate boundary
- LATERAL or STRIKE-SLIP
- fault type of the San Andreas
- LATERAL or STRIKE-SLIP
- fault related to compression stress
- REVERSE or THRUST
- fault related to convergent plate boundary
- REVERSE or THRUST
- fault at Northridge
- REVERSE or THRUST
- fault related to tension stress
- NORMAL
- fault related to divergent boundary
- NORMAL
- fault created Basin and Range in Nevada
- NORMAL
- fault that forms a fault scarp
- NORMAL
- two of these faults produced fault-block mountains (graben-horst)
- NORMAL
- produces anticlines and synclines
- FOLDING
- stress related to folding
- COMPRESSION
- plate boundary related to folding
- CONVERGENT
- the "hills" or upward folds
- ANTICLINES
- the "valleys" or downward folds
- SYNCLINES
- fault that may result in a waterfall
- REVERSE or THRUST
- results in uplifted mountains
- FOLDING
- location of most earthquakes
- NEAR PLATE BOUNDARIES