Geo Exam 3 – Chapter 08 Earthquakes

what causes earthquakes?

• Tectonic plate movement

• Volcanic eruptions

• Weather changes

• Human activity

how can we define the size of an earthquake

• Magnitude

• Intensity

• Frequency

• Depth

where and why do earthquakes occur?

• Primarily in the middle of tectonic plates due to volcanic activity.

• Along tectonic plate boundaries due to the release of built-up energy.

• In the continental interiors due to erosion.

• At random locations due to weather-related factors.

how do earthquakes cause damage?

• Seismic waves cause the ground to shake.

• They produce heavy rainfall causing erosion.

• They lead to windstorms that damage structures.

• They result in volcanic eruptions that damage buildings.

what are the earthquake safety rule

• Drop, cover, and hold on

• Run outside immediately

• Stay in bed

• Take no precautions

Alabama is an earthquake-free place.

• True

• False

Geologists who specially study earthquakes are called .

• seismologists
• paleontologists

• volcanologists

• speleologists

The elastic-rebound theory explains why an earthquake happens through successive processes of .

• elastic deformation - stress build-up - fault slip
• fault slip - stress build-up – elastic deformation

• stress build-up – fault slip – elastic deformation

• stress build-up – elastic deformation – fault slip

In which case can you find seismicity?

• Sudden slip on a fault

• Movement of magma in a volcano

• Giant landslides

• Underground nuclear-bomb tests

• All of the above

The quantity of offset that occurs along a fault is termed .

• fault gouge

• the fault gauge

• displacement
• accumulation