ESS - Earthquakes Review

How far from an earthquake epicenter is a city where the difference between the p-wave and s-wave arrival times is 6 minutes 20 seconds? (use the graph)

• 1700 km

• 3500 km

• 9900 km

• 4700 km

The epicenter of an earthquake is 6,000 km from an observation point. What is the difference in travel time for the p-waves and s-waves? (use the graph in your notebook!)

• 7 min 35 sec

• 13 min 10 sec

• 9 min 20 sec

• 17 min 00 sec

An earthquakes p-wave arrived at a seismograph station at 2:40 am. The earthquake's S-wave arrived at the same station 2 minutes later. About how far is the station from the earthquake's epicenter? (use the graph in your notebook!)

• 1100 km

• 3100 km

• 2400 km

• 4000 km

What is the approximate difference in arrival times of the p-waves and the s-waves at a seismographic station that is 3,000 km from an earthquake epicenter? (use the graph in your notebook!)

• 2 min 15 sec

• 4 min 30 sec

• 3 min 40 sec

• 5 min 40 sec

A seismic station receives a p-wave at 12:07 am and an s-wave at 12:12 am. How far is the station from the epicenter? (use the graph in your notebook!)

• 2,600 km

• 4,000 km

• 3,400 km

• 8,800 km

Which statement best describes the arrival of the initial s-wave at the seismic station?

• It arrived later than the P-wave because S-waves travel more slowly

• It arrived earlier than the P-wave because S-waves travel faster

• It arrived at the same velocity on Earth's surface

• It never reached location A because S-waves can only travel through a liquid medium

What happens to P-waves and S-waves from a crustal earthquake when the waves reach Earth's outer core?

• S-waves are transmitted through the outer core, but P-waves are not transmitted

• P-waves are transmitted through the outer core, but S-waves are not transmitted

• Both P-waves and S-waves are transmitted through the outer core

• Neither P-waves nor S-waves are transmitted through the outer core

How far from an earthquake epicenter is a city where the difference between the P-wave and S-wave arrival times is 6 minutes and 20 seconds? (use the graph)

• 1700 km

• 9900 km

• 3500 km

• 4700 km

A seismic station recorded the arrival of a P-wave at 10:00 am. The S-wave arrival was recorded 4 minutes and 20 seconds later. How far is the station from the earthquake epicenter? (use the graph)

• 1100 km

• 2200 km

• 2900 km

• 7200 km

At which epicenter distance is the difference in arrival times between p-waves and s-waves greatest? (use the graph in your notebook!)

• 1000 km

• 3000 km

• 5000 km

• 7000 km