Earthquakes, Faults, and Folds

The fastest type of seismic wave

• P-Wave
• S-wave
• Surface wave

Second seismic wave to arrive

• P wave
• S wave
• Surface wave

Most destructive seismic wave

• P wave
• S wave
• Surface wave

Force that squeezes rocks together

• compression
• shearing
• tension

Force that pulls rocks apart

• compression
• shearing
• tension

Force that twists rocks horizontally

• compression
• shearing
• tension

fault type where hanging wall falls

• reverse
• strike-slip
• normal

fault where hanging wall rises

• reverse
• strike-slip
• normal

fault where blocks of rock slide past each other side by side

• reverse
• strike-slip
• normal

block of rock below the fault

• hanging wall
• focus
• foot wall
• epicenter