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Eighth Grade (Grade 8) Waves and Sound Questions

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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
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
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
Grade 8 Waves and Sound
Which type of wave is shown in the image?
Water Wave Speed - Bird
  1. seismic
  2. transverse
  3. longitudinal
  4. compression
Grade 8 Waves and Sound
Two waves are shown.
Comparing Amplitudes
Which statement best classifies A and B?
  1. A and B are both transverse waves.
  2. A and B are both longitudinal waves.
  3. A is a transverse wave and B is a longitudinal wave.
  4. A is a longitudinal wave and B is a transverse wave.
Grade 8 Waves and Sound
Which of the following is an example of an electromagnetic wave?
  1. Seismic Wave
  2. Radio Wave
  3. Water Wave
  4. Sound Wave
Grade 8 Waves and Sound
The diagram represents
Doppler Effect
  1. the actual shift in frequency of sounds waves by a moving object
  2. the apparent shift in frequency of sounds waves by a moving object
  3. the actual shift in frequency of sounds waves by a stationary object
  4. the apparent shift in frequency of sounds waves by a stationary object
Grade 8 Waves and Sound
If Kaylee wanted to increase the speed of a sound wave traveling through a certain medium, which of the following would most likely help?
  1. Increase the temperature of the medium
  2. Decrease the temperature of the medium
  3. Increase the frequency of the sound wave
  4. Decrease the amplitude of the sound wave
Grade 8 Waves and Sound
Gamma Rays are used in                        .
  1. the ripening of bananas
  2. cancer treatment
  3. soccer
  4. alarm clocks
Grade 8 Waves and Sound
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