Science (6) Chapter 11

when rocks break, they move along surfaces called faults

• fault
• earthquake
• normal fault
• reverse fault 

vibrations produced by breaking rock

• earthquake
• tsunami 
• tidal wave
• volcano

rocks above the fault surface move downward

• Normal
• Reverse 
• Strike Slip 

rocks above the fault surface are pushed upward over the rock below the fault surface

• Normal 
• reverse
• strike slip 

along this type of fault, rocks slide past each other with little or no upward movement

• Normal 
• reverse
• strike slip 

waves generated by an earthquake that travel through earth

• seismic waves
• surface waves
• primary waves
• secondary waves 

the point where earthquake energy is first released

• focus
• epicenter
• primary waves
• shadow zone 

cause particles in rocks to move back and forth in the same direction the wave is traveling

• primary waves
• secondary waves
• surface waves
• seismic waves

move through earth causing rock particles to move at a right angle to wave travel

• primary 
• secondary
• surface
• seismic

move rock particles in a backward, rolling, side to side motions (cause the most damage)

• primary
• secondary
• surface
• primary