Forces Inside Earth

Objectives:

    1.    Explain how earthquakes result from the buildup of stress in Earth's crust.

    2.    Contrast normal, reverse, and strike-slip faults.

Vocabulary words:

    fault    earthquake    normal fault    reverse fault    strike-slip fault

Resources:

 

Notes:

Forces Inside Earth:  (11-2)

Normal fault - (tension)

normal fault

 

(www.aqd.nps.gov/grd/usgsnps/ deform/normfaultLABEL.gif)

 

 

Reverse fault - (compression)

reverse fault

 

(www.aqd.nps.gov/grd/usgsnps/deform/ reversefaultLABEL.gif)

 

 

 

Strike-Slip fault - (shear stress)

(www.usoe.k12.ut.us/.../8th/ earth/images/lateral.gif)

(wapi.isu.edu/.../EarthPages/ Copy_of_SAN_ANDREAS.jpg)

Thrust Fault - (Compression)

(www.structural-geology-portal.com/ Simple_thrust_fault.gif)

 

 

(academic.emporia.edu/aberjame/ ice/lec16/f16l2.jpg)