Echoes and Vibrations of Sound

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Questions and Answers

What is the term for the maximum displacement from the mean position in the vibration of a wave?

  • Intensity
  • Frequency
  • Wavelength
  • Amplitude (correct)

What is the unit used for measuring the sound level?

  • Ohm
  • Hertz
  • Decibel (correct)
  • Watt

What is the subjective property of sound related to its frequency?

  • Amplitude
  • Intensity
  • Timbre
  • Pitch (correct)

What causes the sensation of sound in the ear?

<p>External physical cause (B)</p> Signup and view all the answers

What type of waves require a material medium for propagation and cannot travel in a vacuum?

<p>Mechanical waves (C)</p> Signup and view all the answers

What unifying themes tie together the field of biology?

<p>Cells, hereditary information, evolution, and energy processing (C)</p> Signup and view all the answers

What allows organisms to move, grow, and reproduce?

<p>Energy processing (D)</p> Signup and view all the answers

Which level of organization do biologists study when examining the molecular biology of a cell?

<p>Cellular level (D)</p> Signup and view all the answers

What do biologists use to make observations and pose questions?

<p>Scientific method (B)</p> Signup and view all the answers

What explains the unity and diversity of life?

<p>Evolution (C)</p> Signup and view all the answers

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