The most destructive earthquake wave is the ________________.
A. Rayleigh wave
B. Tertiary wave
C. P-wave
D. S-wave
E. all waves cause the same damage
. The primary force opposing all motion on all faults is __________________?
A. magnetic attraction among iron-rich minerals.
B. Gravity.
C. Friction.
D. Van der Waal’s force.
E. All of the above.