Chapter 8 Activity Questions & Answers
Identify statements true of earthquakes. - ANSWERS1. Most earthquakes occur along
plate boundaries.
2 .Most earthquakes are the consequence of plate tectonics.
3 .An estimated one million earthquakes occur each year, but most of them are small.
The news media often report an earthquake's magnitude on the Richter scale. Which of
the following items are characteristics of a Richter earthquake magnitude? -
ANSWERSrepresents the amount of energy released
determined from the amplitude recorded by a single seismometer
uses a logarithmic scale
The Interactivity portion of the Earthquake Animation will guide you through the process
of analyzing data from different seismic stations to determine the epicenter location and
magnitude for an earthquake in the east-central region of the United States. Based on
your analysis of the data in this activity, which of the following values is closest to the
magnitude of this earthquake? - ANSWERS5.5
Examine the three seismograms. They were recorded by three different stations during
the same earthquake. They all have the same x-axis and y-axis scales. Based on what
you have learned about wave amplitudes and S-P intervals, assign the seismograms
relative distances to the epicenter using the labels to the right. - ANSWERSB C A
Look at the map provided. Depending on the cities you have picked in the interactive
portion of the link, your map might look different.
Two red circles are drawn around the cities of Memphis and Kansas City. The radius of
each circle is equal to the distance that the epicenter is from each of the city's
seismographs based on their respective seismometers. Based on the data from these
two stations, where might the epicenter of the earthquake be located? Check all
possibilities. - ANSWERSnear the Tennessee-Missouri-Kentucky (TN-MO-KY) tristate
area
Arkansas (AR)
Which tectonic processes are likely to be associated with earthquakes? -
ANSWERSmountain building
formation of ocean basins
movement along plate boundaries
plate subduction
Identify statements true of earthquakes. - ANSWERS1. Most earthquakes occur along
plate boundaries.
2 .Most earthquakes are the consequence of plate tectonics.
3 .An estimated one million earthquakes occur each year, but most of them are small.
The news media often report an earthquake's magnitude on the Richter scale. Which of
the following items are characteristics of a Richter earthquake magnitude? -
ANSWERSrepresents the amount of energy released
determined from the amplitude recorded by a single seismometer
uses a logarithmic scale
The Interactivity portion of the Earthquake Animation will guide you through the process
of analyzing data from different seismic stations to determine the epicenter location and
magnitude for an earthquake in the east-central region of the United States. Based on
your analysis of the data in this activity, which of the following values is closest to the
magnitude of this earthquake? - ANSWERS5.5
Examine the three seismograms. They were recorded by three different stations during
the same earthquake. They all have the same x-axis and y-axis scales. Based on what
you have learned about wave amplitudes and S-P intervals, assign the seismograms
relative distances to the epicenter using the labels to the right. - ANSWERSB C A
Look at the map provided. Depending on the cities you have picked in the interactive
portion of the link, your map might look different.
Two red circles are drawn around the cities of Memphis and Kansas City. The radius of
each circle is equal to the distance that the epicenter is from each of the city's
seismographs based on their respective seismometers. Based on the data from these
two stations, where might the epicenter of the earthquake be located? Check all
possibilities. - ANSWERSnear the Tennessee-Missouri-Kentucky (TN-MO-KY) tristate
area
Arkansas (AR)
Which tectonic processes are likely to be associated with earthquakes? -
ANSWERSmountain building
formation of ocean basins
movement along plate boundaries
plate subduction
