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Earth Science…………………….Miss Hall…………………Unit #2: Earthquakes and Earth’s Interior
Internet Investigations
ANSWER WITH COMPLETE SENTENCES!!!
ES1001: How Are Earthquakes Related to Plate Tectonics
1. Predict where most earthquakes occur. __________________________________
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2. Describe how the pattern of earthquake locations compares to the location of plate
boundaries. _______________________________________________________
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3. Which depth range has the most earthquakes? _____________________________
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4. At what type of plate boundary do you find the most deep-focus earthquakes?
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5. Explain why deep-focus earthquakes occur at this type of plate boundary but not at
others? __________________________________________________________
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6. Which magnitude range has the greatest number of earthquakes? Which has the
fewest? __________________________________________________________
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7. Which type of plate boundary experiences the most earthquakes with large
magnitudes? Hypothesize about why that type of boundary experiences large
earthquakes than others. _____________________________________________
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8. Give three examples of damage that can occur as a result of earthquakes? ________
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9. Which cities are susceptible to earthquake activity? Describe the factors you
considered in order to arrive at your answer. ______________________________
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ES1003: Where Was That Earthquake?
1. What do you notice about the time interval between the arrival of P and S waves at
the three different seismograph stations? What causes these differences?
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2. For each location, record the distance to the epicenter. ______________________
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3. Describe three different examples of damage that occurred as a result of the
Northridge earthquake. ______________________________________________
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ES1010: Which Fault Moved in the Northridge Earthquake?
1. Make a prediction about which fault might have moved during this earthquake. Draw a
small red arrow on your map pointing to your fault.
2. On the map, draw a blue line around the area that was affected by aftershocks.
3. On the map, draw a green line around the area that experienced the strongest ground
shaking.
4. On the map, draw an orange line around the area that had the highest velocity of
ground motion.
5. Which fault was responsible for the Northridge earthquake? Highlight the fault on
your map with a yellow colored pencil. What evidence did you use to arrive at your
conclusion? _______________________________________________________
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6. At what depth did the Northridge earthquake occur? ________________________
7. At what depth range did most of the aftershocks occur? _____________________
8. Based on the location of the aftershocks compared to the Northridge epicenter, in
what direction is the fault inclined (in which direction does the energy flow)?
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