vocabulary 12 earthquakes

Fault a huge in the crust at or below the surface of wich mayshow evidence of motion .

Focus the point where an earthquaker start when the roks begin to slide each other .

Seismic wave  a vibration that spread out away from a focus whe an earthquaker happen .

Epicenter  the point on eath surface directly above the focus .

Afthershock   the shakin on the crust after the initial shaking of an earthquaker .

seismoghraph   sensitive devise that detect the shaking of an earthquaker .

Magnitude   the amout of energy realise by an earthquker .