2q SCI
is the sudden shaking of the ground caused by the sudden released of energy which lasts for seconds
EARTHQUAKE
how are earthquakes formed?
force applied to rocks
fractures in the earths crust
FAULTS
force that acs on rocks to change shape volume
stress
the types of stress
shearing , tension , compression
faults
NORMAL < REVERSE < STRIKE SLIP
type of fault that pulls the crust apart
NORMAL FAULT
fault that push the crust forward
reverse fault
fault formed due to shearing forces
STRIKE SLIP FAULT
represents a portion of the ground
THE MODEL
represents the surface of the earth
UPPER SURFACE
trace of fault
fault line
is the break between two pieces of the model
FAULT
called HYPOCENTER
focus
observing the strength of how severe the shaking effect the earthquake are
INTENSITY
intensity was developed by
Guiseppe Mercalli
Intensity is written in
ROMAN NUMERALS
the scale used for intensity
Modified Mercalli Intensity Scale
is measured by the size of an earthquake or seismic waves
MAGNITUDE
Equipment used for MAGNITUDE
SEISMOGRAPHS
what is an active fault?
generated earthquake in the last 10,000 years
what is an inactive fault?
do not showed any earthquakes in the last 10,000 years
type of wave that can travel through the earths inner layers
BODY WAVES
can only travel through the earths surface
SURFACE WAVES
waves of energy caused by the sudden breaking of rock within the earth
SEISMIC WAVES
is a type of body wave that is the fastest kind to arrive first
PRIMARY WAVES
slower than P wave
SECNDARY WAVES
two types of surface waves
LOVE WAVES, RAYLEIGH WAVES