Gather data: Place the recording station at each of the following distances to the epicenter. See example at right. Look at the upper right corner of the seismogram. What symbol represents the epicenter?
There are two types of body waves:P waves (primary waves) and S waves (secondary waves). Scientists study earthquakes with the aid of an instrument called a seismograph. Have you ever experienced an earthquake? What will be the time difference (∆T) between the first P wave and the first S wave? What major cities are located near the San Andreas Fault? Apply: Suppose a recording station was located 500 km from the epicenter. What does this graph show? Earthquake 1 gizmo answer key. Predict: How do you think the time difference between the first P wave and the first S wave will change as the distance to the epicenter increases? Does not need to be exact. )
As in the Gizmo, each vertical line represents 50 seconds. Observe: Click Play, and then click Pause after the green S wave hits the station. The Earthquake — Recording Station Gizmo™ simulates the seismic waves released by an earthquake. Lesson outline earthquakes answer key. Observe: Click Play, and observe the P and S waves. Question: How are P and S waves shown on a seismogram? Place the recording station 300 km from the epicenter. Now is my chance to help others. Locate the epicenter of an earthquake by analyzing seismic data from three recording stations.
Activity A: Reading a seismogram. The epicenter of the earthquake is the point on Earth's surface closest to the focus, or origin, of the earthquake. Turn on Show time probe. Make a graph: Plot your data on the graph to the right of the data table.
Earthquakes 2 - Determination of Epicenter. What happens when the seismic waves hit the recording station?. Draw a line to connect the points in order. When seismic waves reach the seismograph, a graphical record, or seismogram, is produced. The most famous fault in the U. S. is the San Andreas Fault in California. What is shown on the seismogram at this time? Use for 5 minutes a day. How does this seismogram differ from the one you first investigated? Explore: Click Reset, and drag the recording station closer to the epicenter. Earthquakes 1 gizmo answer key chain. Activity B: Distance to the epicenter.
Earthquakes are usually caused by the sudden movement of rocks along a fault, or fracture, in Earth's crust. Generating Your Document. Introduction: An earthquake releases an enormous amount of energy, which passes through Earth's interior in the form of body waves. Docmerit is a great platform to get and share study resources, especially the resource contributed by past students and who have done similar courses. Northwestern University.
Check that the Distance from the station to the center of earthquake is 860 km. Subscribers Get: - Access to community lesson materials. What types of seismic waves are released? Vocabulary: body wave, earthquake, epicenter, fault, focus, P wave, S wave, seismic wave, seismogram, seismograph. One of the most useful resource available is 24/7 access to study guides and notes.
What would this earthquake feel like? Click Play () and observe the seismic waves leaving the epicenter of the earthquake. Place the left (green) probe on the first P wave, and the right (blue) probe on the first S wave. Draw conclusions: How does the time difference (∆T) between the first P wave and the first S wave relate to the distance to the epicenter? Measure the P and S wave time difference (∆T) on the seismogram at each distance, and record the values in the table on the left. Describe: Click Play and wait for the vibrations to stop.
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