S-Waves always happen first.
Nokorɛ
Ɛnyɛ ampa
Which letter reprsents the first P-waves?
A
B
C
D
E
F
Which letter reprsents the first S-waves?
What is the approximate S-P Interval?
500-600 seconds
800-900 seconds
1300-1400 seconds
1600-2000 seconds