Earthquakes

The huge pieces of the earth's crust are called ____________________________. 

• crust
• plates
• directions
• seismos

The epicenter of an earthquake is

• The point below the surface where rock begins to break and the first motion occurs
• The seismic station closest to the earthquake
• The place where the greatest damage occurs
• The point on the surface directly above the focus

Which travels fastest, always being the first detected by seismic stations?

• P waves
• S waves

What do S (secondary) waves do during an earthquake?

• Shake the ground
• Cause eruptions
• Open cracks in the earth's surface
• Create loud noises

An instrument that detects and measures earthquakes is a 

• seismogram
• focus seismic map
• focus
• seismograph 

What is a fault?

• A crack in a plate.
• Where two plates move toward each other.

Most earthquakes happen along the _________________. 

• coast
• faults
• desert
• directions

Earthquakes under the water can cause _________________________________.

• tornadoes
• tsunamis
• lightening
• hailstorms

A tracing of earthquake motion that is created by a seismograph. This can be on a huge sheet of paper, shows P-waves 

• Seimogram 
• Seismic wave
• Carrollton 
• Deformed 

Seismology

• Branch of science that studies earthquakes 
• Earthquakes 
• The sudden return to elastically deformed rock to its original shape. 
• Focus