Sound Basics
What causes sound to be produced?
Vibrations of an object
What does frequency determine?
The pitch of the sound
What is the typical range that a human can hear?
20 Hz to 20,000 Hz
What tool do scientists use to view sound waves
Oscilloscope
Sound is produced by the vibration of particles.
True
What type of wave is a sound wave?
Longitudinal Wave
What does amplitude determine?
The loudness of the sound
Which animal can hear higher than a human, up to 110,000 Hz?
What kind of wave trace does a LOUD sound have?
A wave with a large amplitude
Sound waves are transverse waves.
False — they are longitudinal.
In what mediums can sound travel?
Solid, Liquid, Gas
What unit is frequency measured in?
Herz (Hz)
What happens to human hearing as we age?
What does a wave trace with consistent spacing indicate?
Constant pitch
Elephants can hear higher frequencies than humans.
False — they hear lower frequencies.
What moves when sound travels through a medium?
The particles of the medium
A higher frequency results in what kind of pitch?
Higher
What is called when animals can hear LOWER than 20 Hz
Infrasound
What do musicians and scientists use wave traces for?
To analyze sound characteristics.
Louder sounds have waves with smaller amplitudes.
False — they have larger amplitudes.
What happens to air particles during the compression part of the sound wave?
They are pushed together
A lower amplitude results in what kind of sound?
Softer, quieter
What is the term for the range of frequencies that a living thing can hear?
Auditory Range
What kind of wave trace does a soft sound have?
A wave with a low amplitude
All animals can hear the same range of sound frequencies.
False — hearing ranges vary between species.