Study

Forces and Sound

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  • When we speak, the air from our lungs makes our _____ vibrate as it passes through our throat.
    vibration
    friction
    sound
    vocal cords
  • It allows us to differentiate between high and low sounds.
    Decibels
    Intensity
    pitch
    Timbre
  • It is the quality of a sound that allows us to identify its source.
    Intensity
    Decibels
    Pitch
    Timbre
  • a bird flying in the sky
    water resistance
    air resistance
    friction
  • When our brain receives vibrations and our brain interprets them:
    vibrations
    sound
    friction
    water resistance
  • _______ objects break when sufficient force acts on them.
    rigid
  • This occurs when a sound hits a distant obstacle. The sound is reflected and returns to our ears.
    Echo
    Speed of Sound
    Noise Pollution
    Reverberation
  • a car traveling on a road
    air resistance
    friction
    water resistance
  • An object will slow down until it stops because of:
    water resistance
    air resistance
    friction
  • Movements transmitted through the air that reach our ears and are transformed into electrical impulses inside the ear.
    vibration
    vocal cords
    friction
    water resistance
  • The volume of a sound.
    Pitch
    Intensity
    Timbre
    Decibels
  • They do not return to their initial shape when a force stops acting upon them.
    elastic objects
    rigid objects
    plastic objects
  • A level of noise that affects our hearing. It can be bad for our mental and physical health.
    Echo
    Reverberation
    Noise Pollution
    Speed of Sound
  • Volume is measured in:
    Intensity
    Timbre
    Decibels
    Pitch
  • The ______ allows you to identify different voices.
    timbre
  • The volume of a sound is the ______.
    intensity
  • Friction and ______ are forces that slow down moving objects.
    resistance
  • A fish swimming in a pond
    water resistance
    air resistance
    friction
  • This occurs when a sound is reflected by a nearby obstacle. The sound returns quickly to our ears and they overlap.
    Echo
    Noise Pollution
    Speed of Sound
    Reverberation
  • Forces can also make objects start or stop moving, or change speed or ______.
    direction
  • They go back to their initial shape when a force stops acting upon them.
    elastic objects
    plastic objects
    rigid objects
  • A _______ is a unit that measures the intensity of sound.
    decibel
  • They break if sufficient force acts upon them.
    elastic objects
    rigid objects
    plastic objects
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