Earthquakes Volcanoes and Tsunamis Natural Disasters

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

• Sierra Nevada Seismic Zone
• Denali Fault
• San Fransisco 
• San Andreas

The Richter scale measures:

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

An instrument that detects and measures earthquakes is a 

• seismogram
• focus seismic map
• focus
• seismograph 

Earthquakes under the water can cause _________________________________.

• tornadoes
• tsunamis
• lightening
• hailstorms

The focus of an earthquake is

• The point (below Earth's surface) where rock breaks
• The closest seismic station
• The place where the greatest damage occurs
• A fault

Which kind of wave arrives at seismic stations second?

• P (primary)
• S (secondary)
• L (love)
• R (rayleigh)

Which kind of waves usually do the most damage in an earthquake?

• P waves
• S waves
• L waves
• Radio waves

Which kind of waves can NOT travel through a liquid?

• P waves
• S waves
• Radio Waves
• X rays

A break in the lithosphere along which movement has occurred is a(n)

• fault
• earthquake
• epicenter
• volcano