Activity 2B Crossword

Seismic waves that arrive last and usually cause the most damage
The point in a fault at which an earthquake begins
A record produced by a seismograph
The point on the earth`s surface directly above the surface
An earthquake or tremor that often follows a larger earthquake
The circum-___?____ belt is one of the most active earthquake zones
The ___?___ rebound theory states that rocks on either side of a fault will spring back to a position of little or no strain at the moment of an earthquake
The best-known earthquake magnitude scale
The zone where about 15% of all earthquakes occur
The most reliable method for measuring an earthquake`s strength is the __?__ magnitude scale
A weak earthquake
An instrument used to record and study earthquakes
The sudden vertical or horizontal movement of rock masses along a fault
The study of earthquakes
A base-__?__ system separates buildings from their foundations
An earthquake that results from sudden movements of rock below the earth`s surface
The Modified __?__ Scale describes and evaluates the effects of an earthquake
The fastest traveling seismic wave is the __?__ wave