match the definitions to the words

1.    Seismic shadow zone
2.    Triangulation  
3.    Rayleigh waves 
4.    Love waves

A.  A process used to determine the epicenter of an earthquake
B.  A surface wave that causes horizontal motion
C.   Areas on the earth’s surface where waves traveling through the earth don’t arrive due to refraction
D.  A surface wave that causes vertical motion