To describe how each wave pattern may be used to predict an eruption.
To recognize that complex waves can be represented as the sum of simpler waves, so scientists can analyze complex wave patterns by identifying their simpler components.
Each section should include a rectangular box with a horizontal baseline into which the wave pattern can be sketched by the student. Each section should also ask the student to record information about:
Once the worksheets have been created and distributed to students, have students access NOVA's "Volcano's Deadly Warning" Web site.
Students should utilize the Seismic Signals interactive to observe the four wave patterns depicted there. Students are to sketch an accurate example of each pattern onto their teacher-made worksheet. They should also read about each wave pattern and record information about:
Completing this work prepares students to better understand Bernard Chouet's work when they view the NOVA program.
View the first 30 minutes of the program, up to where Stanley Williams is introduced and the stage is set for each scientist's hypothesis to be tested.
Begin working on the Sine Wave Science student handouts, adding Sine Wave 1 and Sine Wave 2 together to produce the Complex Sine Wave.
Finish viewing the video.
Complete the addition of the two sine waves and answer the questions about the wave patterns.
Editor's Note: To read an extended description of this idea, see Featured Teachers.
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