Chapter 7 science Flashcards
what causes EQ’s?
earthquakes are a consequence of moving plates
earthquake
vibration from the sudden release of energy from an area along a fault
fault
fracture in the crust along which there has been movement. two blocks of rock move past each other
normal fault
divergent plate
reverse fault
convergent plate
strike -slip fault
transformate plate
what causes the sudden release of energy
plate movement, blocks are locked, elastic energy over comes friction,
seismic waves
vibration of EQ’s
two types of seismic waves
body waves, surface ways
body waves
goes through the earth
body waves types
P waves, s waves
p-waves (primary)
first waves, compression, high velocity
s-waves (secondary)
sher, slower, only travels through solids
surface waves
most distructive; on the surface
two types of surface waves
love, rayleigh