Earthquakes

What are the fastest body waves?

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

At what location does the first motion of an earthquake occur

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

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

When seismologist record arrival times of P waves and S waves at several seismograph stations, they are looking for the earthquake's

• magnitude
• intensity
• epicenter
• focus

What is the minimum number of seismograph stations needed to locate an earthquake epicenter?

• 1
• 2
• 3
• 1 billion

One seismograph station, by itself, can determine the

• direction of the epicenter
• location of the epicenter
• distance to the epicenter from the seismograph station
• location of the nearest Papa Johns

Primary waves are ______________ waves, meaning they cause material to compress and expand.

• violent
• compression
• shear
• transverse

Which wave arrives first to the seismic station?

• P - Primary
• S - Secondary
• Surface

Which wave is the most destructive?

• P - Primary
• S - Secondary
• Surface Wave

Which wave is a push and pull wave?

• P - Primary
• S - Secondary
• Surface