Earthquakes and Volcanoes

The outside layer of the earth is called ______________________.

• core
• crust
• mantle
• outer core

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

This famous transform fault is located in the western United States creates significant earthquake activity for California

• New Madrid
• Denali Fault
• Ramapo Seismic Zone
• San Andreas

The Richter scale measures:

• the amount of radon gas released
• the movement of plates
• the strength of an earthquake
• the weight of tectonic plates

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

• P waves
• S waves

An instrument that detects and measures earthquakes is a...

• seismogram
• focus seismic map
• focus
• seismograph 

A sudden shaking of the earth is called an ______________________. 

• tsunami
• earthquake
• pressure
•  seismograph

During an earthquake, the earth's crust can crack. 

• true
• false

Earthquakes under the water can cause _________________________________.

• tornadoes
• tsunamis
• lightening
• hailstorms