Psychology: Waves and Wavelengths

What are the two physical characteristics of a wave?

• Frequency and amplitude

• Wavelength and amplitude

• Amplitude and frequency

• Intensity and wavelength

What does wavelength refer to?

• The distance from the center line to the top point of the crest or the bottom point of the trough

• The length of a wave from one peak to the next

• The number of waves that pass a given point in a given time period

• The height of a wave measured from the peak to the trough

How are wavelength and frequency related?

• Longer wavelengths have higher frequencies

• Shorter wavelengths have lower frequencies

• Wavelength and frequency are not related

• Wavelength and frequency have an inverse relationship

What is the visible spectrum?

• The portion of the electromagnetic spectrum that humans can see

• The portion of the electromagnetic spectrum that includes gamma rays and x-rays

• The portion of the electromagnetic spectrum that includes microwaves and radio waves

• The portion of the electromagnetic spectrum that includes ultraviolet light and infrared light

What is the association between light wavelength and perception of color?

• Longer wavelengths are associated with red, while shorter wavelengths are associated with blue

• Longer wavelengths are associated with blue, while shorter wavelengths are associated with red

• Longer wavelengths are associated with green, while shorter wavelengths are associated with violet

• Longer wavelengths are associated with violet, while shorter wavelengths are associated with green

What is the relationship between the frequency of a sound wave and our perception of its pitch?

• High-frequency sound waves are perceived as high-pitched sounds

• Low-frequency sound waves are perceived as high-pitched sounds

• High-frequency sound waves are perceived as low-pitched sounds

• Low-frequency sound waves are perceived as low-pitched sounds

What is the audible range of sound frequencies for humans?

• 20 to 2000 Hz

• 20 to 20000 Hz

• 125 to 2000 Hz

• 1000 to 91000 Hz

What is the unit of measurement for loudness?

• Hertz (Hz)

• Decibels (dB)

• Watts (W)

• Amplitude (A)

What is the threshold for pain in terms of sound intensity?

• 60 dB

• 80 dB

• 120 dB

• 130 dB

What is timbre in relation to sound?

• A sound's pitch

• A sound's loudness

• A sound's purity

• A sound's frequency