Earthquakes
G Period
Earth Science Honors
Mrs. Wilde
Chapter 7: Earthquakes
Earth Science Honors
Mrs. Wilde
Chapter 7: Earthquakes
Terms
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- MOHO
- The _____ boundary is the boundary between the crust and mantle
- strike-slip
- A ___________ fault is where the fault moves horizontally
- shadow zone
- The _____________ is the place where no seismic waves reach the surface on Earth
- paleoseismology
- the study of ancient earthquakes
- surface waves
- Waves on the surface (long name)
- longer
- The _____ the rupture of a fault, the more energy is released
- tsunami
- produced when a vertical earthquake occurs in the ocean
- P Wave
- This type of wave is compressional
- magnetic field
- The liquid outer core and solid inner core produce the _______ ________
- plate
- Earthquakes normally occur at ______ boundaries
- seismic waves
- All waves that travel through rock
- L Wave
- This type of wave (short name) is a combination of S waves and P waves
- plastic
- When stress is applied to rock, before it breaks it goes through ______ deformation.
- time-travel
- We used a _____________ graph in calculating the distance to the epicenter from a seismogram
- San Andreas
- The _____________ fault system is an example of strike-slip faults
- amplitude
- This measurement represents is the highest point on a seismograph
- brick
- "Not a _____ shall be left upon a _____" Mercalli scale 12 (1 word answer)
- S Wave
- This is a shear wave
- New Madrid
- This quake was in Missiouri and rang bells in Boston
- P Wave
- This type of wave can travel through water
- seismology
- The study of earthquakes
- P Wave
- This type of wave is the first to arrive
- L waves
- The most dammaging seismic waves (short name)
- earthquake
- A sudden motion or trembling of the earth
- focus
- the exact point of an earthquake's origin
- iron
- The core is made of ____ and nickel
- S Wave
- This type of wave cannot travel through water
- body
- Both S and P waves are ________ waves
- Loma Prieta
- This quake in Santa Cruz caused 5 Billion dollars of dammage
- ring of fire
- The Pacific _________ _________ _______ has some of the most earthquakes anywhere
- Alaska; 1964
- The "Good Friday Quake" which destroyed Valdez occured in (place) ______ in (year) _____
- 660-kilometer discontinuity
- The _____________ is the boundary where seismic waves slow down again because the pressure increases
- precursors
- Evidence of an upcoming earthquake prior to an earthquake
- deep
- ______ focus earthquakes get mainly absorbed in rock
- aftershock
- A small tremble after an earthquake while the ground is settling
- epicenter
- the point above ground of an earthquake's origin
- refract
- Waves do this when the density of the material they go through changes
- surface wave
- another way of saying "L wave"
- fault creep
- the movement of plates slowly and constantly, not storing and releasing large ammounts of energy
- shallow
- _____ focus earthquakes are the most destructive
- foreshock
- A small tremble before an earthquake
- blind
- Many thrust faults are _____ and don't show up on the surface
- no
- (Yes or No) We are very good at earthquake prediction right now
- mediterranean-asian
- The _____________________ belt has many earthquakes near asia
- body wave
- any wave that travels through the body of the earth
- Alaska
- The state with the most earthquakes
- seismograph
- the instrument used to measure earthquakes
- Benioff zone
- The zone where a subducting plate scrapes against the other plate
- L Wave
- another way of saying "Surface wave"
- 660
- The 660-kilometer discontinuity is located _____ kilometers below the surface.
- thrust fault
- fault where pieces of rock are being pushed together
- 3
- The number of seismographs from different places to find the epicenter of an earthquake
- S-P Lag
- The time between the S-wave arrival and the P-wave arrival
- short
- _____ term prediction predicts place and time
- subduction zones
- Most deep focus earthquakes are found in ________________
- liquefaction
- The process where the ground turns into liquid through shaking
- mid ocean ridges
- ____________ are structures on the sea floor that have many earthquakes
- liquid
- the outer core is _______ (form)
- shallow
- Transform faults have ______ focus earthquakes
- right lateral
- If the plate on the other side of you is moving right it is a __________ earthquake
- buildings
- It's not the earthquake that kills people, it's the _______.
- Richter
- The Richter scale is named after Charles ________.
- nickel
- The core is made of iron and _____
- Northridge
- a thrust fault in the LA basin caused a huge earthquake
- California
- The state with the second most earthquakes
- left lateral
- If the plate on the other side of you is moving left it is a ___________ earthquake
- 142
- The high degree of the shadow zone is ____ degrees
- moment magnitude
- The ______________________ scale is based on the largest body wave and length of fault cracking
- long
- _____ term prediction predicts place
- Mercalli scale
- the scale of earthquake magnitude based on dammage
- Richter scale
- The scale of earthquake magnitude based on the largest body wave
- 103
- The low degree of the shadow zone is ____ degrees