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Chapters 11 + 12 Concept Map, Amplitude is the height of a wave., A trough…

- - - - A period is the time it takes to complete one wave, rotation, revolution, or cycle.
        
        Cycle
  - - - A frequency that falls within a human's range of perception (between 20 Hz and 20 kHz) is audible.
        
        Audible
        
        An ultrasonic sound wave, due to having a frequency above a human's range of perception, is not audible.
        
        Ultrasonic
        
        An infrasonic sound wave, due to having a frequency below a human's range of perception, is not audible.
        
        Infrasonic
        
        Pitch is the apparent difference in frequencies that are audible.
        
        Pitch
        
        When the Doppler effect applied to sound there appears to be a change in pitch.
        
        Doppler Effect
      - Resonance is the ability to cause an object to vibrate by playing its natural frequency.
        
        Resonance
      - Beat frequency is the resulting waveform when two waves interfere with each other with slightly different frequencies .
        
        Beat Frequency
        
        The frequency of the change in intensity is equivalent to the difference in the original frequencies in a beat frequency,
        
        Intensity
        
        The threshold of pain is, for humans, the maximum observable intensity.
        
        Threshold of Pain
        
        The threshold of hearing is, for humans, the minimum observable intensity.
        
        Threshold of Hearing
        
        A decibel is the logarithmic expression of a sound’s intensity.
        
        Decibel
        
        Loudness is the apparent difference in intensities.
        
        loudness
  - - - A transverse standing wave is a wave formation which appears to be stationary, but is a result of wave reflection and superposition.
        
        Transverse Standing Wave
        
        Transverse standing waves have nodes and antinodes.
        
        Antinodes
        
        Nodes