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"Communication Among Elephants" Questions

Answer these questions in complete sentences on a separate sheet of paper.

  1. Describe infrasound.
  2. Why did Dr. Katy Payne already know about infrasound?
  3. What is the frequency range of human hearing ?
  4. Longitudinal waves are also called ________________________ waves (use your prior knowledge or notes).
  5. If Dr. Payne played back a 15 Hz elephant call ten time times faster, what would its frequency be?
  6. In paragraph form, compare and contrast earthquake and sound waves. You may use your prior knowledge or just the information in this article.
  7. Describe refraction.
  8. The article describes how varying air temperatures can force sound waves to refract (bend). Speculate how submarine commanders use varying temperatures in layers of ocean water to escape detection by ships.
  9. Elephants can hear distress calls up to ______ km away. Remember 1 mile = 1.6 km.
  10. Describe diffraction.
  11. Besides diffraction what else aids long-distance elephant communication?
  12. Describe harmonics.
  13. If I call 100 Hz the "fundamental" frequency, why are 200 Hz and 300 Hz harmonics of 100 Hz, but 150 Hz and 250 Hz are not?
  14. What is the 2nd harmonic of middle C (262 Hz)?
  15. How much of elephant communication are we really hearing?

Source:"What is an Elephant? An Interdisciplinary Study" GIS 3991: Interdisciplinary Studies Core Seminar. Interdisciplinary Studies Program, Wayne State University. Winter Semester 2001.