Deep Focus Earthquakes Occur at a Maximum Depth of ______

Q30: Perhaps 90 percent of the destruction in

Q31: _ are earthquake waves that cause the

Q32: The _, the distance between the epicenter

Q33: Small earthquakes following the main surface wave

Q34: The most important concentration of earthquakes in

Q36: The time interval between the first arrival

Q37: The time interval between the first arrival

Q38: First motion studies of mid-ocean ridges show

Q39: A series of earthquakes that occurred near

Q40: Tsunami waves may move faster than _.<br>A)