Waves and Wavelengths

Review Questions

Which of the following correctly matches the pattern in our perception of color as we move from short wavelengths to long wavelengths?

  1. red to orange to yellow
  2. yellow to orange to red
  3. yellow to red to orange
  4. orange to yellow to red

Hint:

B

The visible spectrum includes light that ranges from about ________.

  1. 400–700 nm
  2. 200–900 nm
  3. 20–20000 Hz
  4. 10–20 dB

Hint:

A

The electromagnetic spectrum includes ________.

  1. radio waves
  2. x-rays
  3. infrared light
  4. all of the above

Hint:

C

The audible range for humans is ________.

  1. 380–740 Hz
  2. 10–20 dB
  3. less than 300 dB
  4. 20-20,000 Hz

Hint:

D

The quality of a sound that is affected by frequency, amplitude, and timing of the sound wave is known as ________.

  1. pitch
  2. tone
  3. electromagnetic
  4. timbre

Hint:

D