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Science 4 Unit 4

  •  English    28     Public
    Sound, Vibrations, Pitch, Volume, Instruments
  •   Study   Slideshow
  • What is source of this sound (teacher make sound)
    :)
  •  10
  • In what state of matter does sound travel the best?
    Solids
  •  15
  • Why did Native American people lie with one ear on the ground to help them hunt?
    Since sound travels best through solids they could hear animals through the ground
  •  20
  • Which sound is loud and which sound is soft: Motorbike, whisper
    Soft: Whisper, Loud: Motorbike
  •  5
  • What is volume a measure of?
    How loud or soft a sound is
  •  15
  • How does sound travel?
    Vibrations
  •  15
  • What makes the rice jump on a glass jar when it is hit?
    The vibrations
  •  15
  • Hum and put your hand on your throat, what can you feel?
    Vibrations
  •  15
  • Why do you hear sound better through a tube?
    Vibrations are trapped in the tube and travel directly into your ear
  •  25
  • What is a decibel (dB) a unit for ?
    Volume (how loud of soft a sound is. More decibels= louder sound)
  •  20
  • One sound is 70dB on a sound level meter, one sound is 84dB on a sound level meter. Which sound is louder?
    The 84dB sound.
  •  10
  • What type of vibrations cause loud sounds?
    Large vibrations
  •  15
  • What type of vibrations cause soft sounds?
    Small vibrations
  •  15
  • What type of vibrations cause high pitch sounds?
    Fast vibrations
  •  15
  • What type of vibrations cause low pitch sounds?
    Slow vibrations
  •  15
  • What does it mean to muffle a sound?
    Make a loud sound softer
  •  15