what is the 2nd wave in the 5th wave
The 5th Wave (novel) Second wave: Surf's Up: The Others, realizing that roughly 40 percent of Earth's population lives within 60 miles (97Â km) of coastline, drop enormous rods "twice as tall as the Empire State Building and three times as heavy" (45) onto the Earth's fault lines, causing massive tsunamis that wipe out three billion people.
Seismic wave Among the many types of seismic waves, one can make a broad distinction between body waves, which travel through the Earth, and surface waves, which travel at the Earth's surface.[2]:48–50[3]:56–57