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Eighth Grade (Grade 8) Waves and Sound Questions

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Grade 8 Waves and Sound
We measure the frequency of a wave in
  1. Meters
  2. Hertz
  3. Meters per second
  4. Hertz per second
Grade 8 Waves and Sound
In a given medium, if the frequency of a wave decreases, its
  1. wavelength increases
  2. speed increases
  3. amplitude decreases
  4. wavelength decreases
Grade 8 Waves and Sound
Complementary colors are
  1. colors that combine to form secondary colors.
  2. all the colors of the rainbow.
  3. any two colors that combine to form white light.
  4. colors that cannot be split into component colors.
Grade 8 Waves and Sound
Which best describes electromagnetic energy?
  1. moves electrons
  2. travels through space as waves
  3. forms chemical bonds
  4. generates electrical energy
Grade 8 Waves and Sound
Grade 8 Waves and Sound
Grade 8 Waves and Sound
Grade 8 Waves and Sound
Which of the following groups of electromagnetic waves is listed correctly in order of increasing frequency?
  1. visible light, gamma rays, X-rays
  2. X-rays, visible light, radio waves
  3. radio waves, visible light, X-rays
  4. radio waves, gamma rays, X-rays
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