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Earth science regents locating an epicenter answer key

Earth science regents locating an epicenter answer key 2026

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The document is a worksheet for a Regents Earth Science class focused on determining the epicenter of earthquakes using P- and S-wave arrival time differences from seismograms recorded in various cities. It includes data for three earthquakes, requiring students to calculate distances to the epicenter and plot their locations on a map.

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Click ‘Get Form’ to open the earth science regents locating an epicenter answer key in the editor.
Begin by entering your name in the designated field at the top of the form. This personalizes your worksheet and ensures proper identification.
For Part I, review the data provided for each earthquake event. Use your travel time curve to calculate the distance to the epicenter for each city listed. Input your findings in the 'Distance to Epicenter' fields next to each city.
In Part II, utilize the distance information you calculated. Draw circles on a map around each city using the distances as radii. Identify where these circles intersect to locate each earthquake's epicenter.
Finally, record the closest city and its directional relation (N, S, E, W) for each earthquake in the provided spaces below Part II.

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What is an epicenter question answer?

The correct answer is The point on a fault where the first movement occurs. Key Points. The passage defines the epicenter as the point on a fault at which the first movement occurs during an earthquake. This is the initial location where built-up stress is released, resulting in seismic waves.

What are the four steps to locate the epicenter?

The process includes the following steps: Locate the arrival of the P-wave. Locate the arrival of the S-wave. Determine the time difference between the two arrival times. This is the P- and S-wave interval. Use the interval to determine the distance from the epicenter.

How to locate an epicenter in earth science?

Triangulation can be used to locate an earthquake. The seismometers are shown as green dots. The calculated distance from each seismometer to the earthquake is shown as a circle. The location where all the circles intersect is the location of the earthquake epicenter.

earthquake epicenter lab answer key

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How to calculate the distance from the epicenter?

Finding the Distance to the Epicenter Use the time difference between the arrival of the P and S waves to estimate the distance from the earthquake to the station. (From Bolt, 1978.) Measure the distance between the first P wave and the first S wave. In this case, the first P and S waves are 24 seconds apart.