The point on the surface of crust directly above the focus
What is Epicenter
100
shaking and trembling that results from the movment of rock beneth earth surface. Caused by stress adding engery to rock, usually along fault
What is earthquake
100
P-waves S-waves and Surface waves are 3 types of
What is seismic Waves
100
P and S waves combonation that reach the surface
Roll like ocean waves up and down and moves side to side out along the surface from epicenter
slowest wave
produce severe ground movments
What is surface wave
100
secondary wave. Vibrates from side to side and up and down. Slower than a P-wave. Shake the ground back and forth. can not travel through liquid
What is S-wave
200
primary wave. compress and expand the rock. travlels fastest (first to arrive) Can damage buildings. Travels through soilds and liquids
What is P-wave
200
area beneath earths surface where rock that is under stress breaks triggering an earthquake
What is focus
200
A force that act on rock to change its shape and volume
energy is added to the rock untill its released by breaking or changing shape
What is stress
200
downward bend
What is syncline
200
upward bend
What is Anticline
300
series of folds creating parallel ridges and valleys
What is folded mountains
300
rock being pushed/pulled in oppisite directions
happens at a transform boundary
What is shearing
300
bending of rock as a result of compression
What is folding
300
squeezing of rock, rock bends or folds
happens at a convergent boundary
What is compression
300
pulling of the crust in opposite directionsso that the rock becomes thinner in the middle
this happens at a divergent boundry
What is tension
400
instrunment used to record and measure seismic waves
What is seismograph
400
rating based on the size of the seismic waves
What is richter scale
400
observe the amount of damage rate the earthquake usind i- xii
What is mercalli scale
400
name the 3 rating scales to measure earthquakes for magnitutude
What is Mercalli Scale Richter scale moment magnitude scale
400
use seismic wavesmeasure the difference in time between the P and S waves arrial to determine distance from the epicenter. They then create a circle around the station with a radius of that distance
What is how to locate the epicenter
500
Rock changing shape or volume as a result of stress (bending folding sliding uplifting tilting)