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Ninth Grade (Grade 9) Waves and Sound Questions

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Grade 9 Waves and Sound
Waves not only move up and down, but also move
  1. forwards.
  2. backwards.
  3. none of the above.
  4. a and b.
Grade 9 Waves and Sound
A sound wave is an example of a
  1. transverse wave.
  2. longitudinal wave.
  3. primary wave.
  4. secondary wave.
  5. ocean wave.
Grade 9 Waves and Sound

This question is a part of a group with common instructions. View group »

Which electromagnetic waves are the longest?
  1. radio
  2. violet
  3. gamma
  4. ultraviolet
Grade 9 Waves and Sound
Grade 9 Waves and Sound
This is a form of energy traveling through space, which is blocked by ozone in the Earth's upper atmosphere.
  1. troposphere
  2. ultra-violet radiation
  3. light spectrum
  4. chlorofluorocarbons
  5. none of the above
Grade 9 Waves and Sound
Which is the best description of the nature of light?
  1. Light always behaves like waves.
  2. Light always behaves like particles.
  3. Light sometimes behaves like waves and at other times like particles.
  4. Light never behaves like either waves or particles.
Grade 9 Waves and Sound
Grade 9 Waves and Sound

This question is a part of a group with common instructions. View group »

Grade 9 Waves and Sound
In 1940, the Tacoma Narrows Bridge collapsed after exhibiting wave motion during 40 mile-per-hour winds. Which two principles of waves best explain the bridge's collapse?
  1. shock and bow waves
  2. refraction and reflection
  3. natural frequency and resonance
  4. constructive and destructive interference
Grade 9 Waves and Sound

This question is a part of a group with common instructions. View group »

Grade 9 Waves and Sound
Grade 9 Waves and Sound
When a sound source approaches an observer, the
  1. pitch become lower.
  2. pitch becomes higher.
  3. light becomes bluer.
  4. light becomes redder.
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