the height of a wave's crest
an earthquake that occurs after a larger earthquake in the same area.
these are the s and p waves because they travel through the body of the Earth.
a wave in which the energy travels in the same direction as the wave.
the highest point of a wave
shaking of the Earth's crust due to a release of energy
theory that states most earthquakes occur as plates move, get stuck, bend and then break, releasing stored energy
the point on the Earth's surface directly above the focus of an earthquake
a crack in the Earth along which movement has occurred
the point beneath Earth's surface where rock breaks under stress and causes an earthquake.
the block of rock that forms the lower half of a fault
the block of rock that forms the upper half of a fault
a measure of the amount of damage done to an area by an earthquake
when shaking of an earthquake caused saturated solid ground to turn into a liquid like pudding
last wave to arrive, slowest, up and down motion, causes the most damage
the amount of energy released during an earthquake
a scale that rates earthquakes according to their intensity and how much damage they cause
the boundary between the earth's mantle and crust
an inclined fault in which the hanging wall appears to have slipped downward relative to the footwall
a fault where the motion is diagonal. A combination of vertical and strike-slip movement
travels fastest, compressional waves, can travel through solids, liquids and gasses
a reverse fault in which the hanging wall slides over to the foot wall.
a scale that rates an earthquake's magnitude based on the size of its seismic waves
an area along a fault where relatively few earthquakes have occurred recently but where strong earthquakes are known to have occurred in the past
a more accurate measurement of earthquake magnitude than the richter scale.
the paper record of an earthquake's seismic waves produced by a seismograph
an instrument that records earthquake waves
the branch of geology that studies earthquakes
an area on the Earth's surface where no direct seimic waves from a particular earthquake can be detected.
waves where particles of material move back and forth perpendicular to the direction where the wave itself moves
a type of fault where rocks on either side move past each other sideways with little up or down motion
seismic waves that travel along the Earth's surface, L-wave
travels slower, side-to-side, shear, secondary, only through solids
lowest point of the wave
a massive ocean wave that forms after a volcanic eruption, submarine earthquake, asteroid or landslide displaces water
the distance between corresponding points on adjacent waves
A surface wave (type of L-wave) that causes rocks to move side-to-side. Very Destructive.
A surface wave (type of L-wave) that reaches the surface with up and down movement
Name of ship that inspired the legend of the Palatine Lights
The type of boundary earthquakes are associated with
4 causes of an earthquake
volcanic eruption, meteorite impact, nuclear explosion, build up of stress between plates
5 sources of earthquake destruction
1. Ground shaking
3 reasons fire cause damage during earthquakes
1. gas lines can break causing things to be flammable
2.fire spreads quickly
3. water lines can break making it hard for fires to be put out
4. collapsed buildings can make it hard for the fire department to get to the fire
S-P Lag time
The time difference between when the seismograph records the first P-wave and when it records the first s-wave
The 5 major faults in Massachusetts
Connecticut Valley Border, Wekepeke, Clinton-Newbury, Bloody Buff, Northern Border
last major earthquake in Boston
The 5 S's
1. Side to side