10.7 and 10.8 Notes Flashcards
What provides a way to locate the epicenter
the difference in velocities of p and s waves
what do you do first to find the epicenter location
find the difference in arrival of the first p-wave and the first s-wave on the seismogram
what do you do second to find the epicenter location
use the ESRT page 11 and a piece of scrap paper to mark off the time difference
slide the scrap paper up until what
the two tick marks line up to the p and s wave line
after the tick marks line up then
read down for distance
once you get the distance you can use a ___ to draw a circle around the city where the seismograph is located
compass
the earthquake could have happened where on the circle
anywhere on the circle
travel-time info from ___ or more seismographs can be used to find the exact location of an earthquake epicenter
3
1 circle =
360 possibilities
2 circles =
2 possibilities
3 circles
1 possibility
what does the damage to buildings and other structures from earthquake waves depend on
earthquake intensity, how long the shaking lasts, the nature of the material that supports the structure, the design of the structure
building falling, bridges collapse
structural failure
the ground visibly moves along a fault
landshift
the sliding down of a mass of soil or rock from a mountain
land slide
