Earthquake Test Practice 2016

What are the fastest body waves?

• P waves
• T waves
• S waves
• Q waves

Earthquakes generally occur at plate boundaries, where

• stress on rocks is greatest
• the most rock is found
• stress on rocks is low
• magnetic pull is greatest

At what location does the first motion of an earthquake occur

• the focus
• the seismic gap
• the mantle
• the epicenter

A foreshock is

• a major earthquake
• a small earthquake
• another name for seismic gap
• a precusor to a tsunami

How do scientists find the epicenter of an earthquake?

• by comparing arrival times of P waves and S waves at several seismograph stations
• by digging at several locations and comparing data
• by comparing departure times of P waves and S waves at several seismograph stations
• by reviewing satellite photos of tsunamis

Why do earthquakes usually occur at plate boundaries?

• The rock on the edges of tectonic plates is soft and gives in easily to various pressures
• Rock in environments near tectonic plate boundaries experience great stress
• The boundaries between tectonic plates have been seismically active for millions of years
• Rockin environments near tectonic p late boundaries experience little stress

What is the epicenter of an earthquake

• the location along a fault where the first motion of an earthquake occurs
• a seismic wave tht travels along the surface of Earth
• the point on Earth's surface directly above the earthquake's focus
• the last place that motion in an earthquake is detected

What is elastic rebound?

• the sudden return of deformed rock traits undeformed shape
• the gradual return of deformed rock to its undeformed shape
• the sudden return of undeformed rock to its deformed shape
• the gradual return of undeformed rock to its deformed shape

Which wave can only go through solids?

• P
• S
• Surface
• Normal

Which wave is the most destructive?

• P - Primary
• S - Secondary
• Surface Wave
• Normal