11-Letter Words Containing: _,A,E,E,H,R,S,T

• shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity

• a disturbance that is extremely disruptive

• To protect a structure against damage by the weather.

• To lower the velocity and kinetic energy of fast neutrons in a nuclear reactor by use of a moderator, and thus increase the efficiency of fission

• spherical deep diving apparatus (lowered by a cable) for underwater exploration