Name Chapter 7 Investigation Worksheet To complete this worksheet, see the instr

Question

Name Chapter 7 Investigation Worksheet To complete this worksheet, see the instructions in the textbook (Chapter 7 Investigation) Table 1. Using Seismograms to Locate an Earthquake Observations: Using the Chapter 7 Investigation in your textbook, look at the area and read the descriptions associated with each location. Think about what each statement implies about possible earthquake hazards for that location. The blue-gray triangles represent the location of seismic stations in the area. The P-S Time Interval for the three stations (Mesaview, Hillside, and White Sands) provides information on where the earthquake occurred. Plot the P-S time interval (the time between the arrivals of the P waves and S-Waves) for each station on the graph below. Then use the distances calculated from the graph to determine approximately where the earthquake occurred. Answer the question below the graphs. Three Seismograms Graph to Determine Distance from Epicenter P-0.78 sec-S Mesaview P-0.45 sec-S Hillside P-S 0.25 sec White Sands 0 0.2 0.4 0.6 0.8 .0 P-S Time Interval (seconds) 0 Station Mesaview Hillside Distance from earthquake (circle the letter for the best answer a) 2-3 km, (b) 3-4 km, (c) 4-5 km, (d) 5-6 k a) 2-3 km, (b) 3-4 km, (c) 4-5 km, (d) 5-6 km, (e) 6-8 km a) 2-3 km, (b) 3-4 km, (c) 4-5 km, (d) 5-6 km, (e) 6-8 km e) 6-8 knm White Sands From the general location of the earthquake, which geologic feature is likely to have caused the earthquake? Table 2. Impact of an Earthquake for Each Town Copyright Il Education. Permission required for reproduction or display

Explanation / Answer

Here we should plot the time against the graph, then

i) Mesaview time interval = 0.78 corresponds to 7.8 km

there fore e) 7-8 km far from epicenter

ii)

HIll time interval = 0.45 corresponds to 4.2 km

there fore e) 4-5 km far from epicenter

iii)

White sands time interval = 0.25 corresponds to 2.3 km

there fore c) 2-3 km far from epicenter

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