Sound as a wave
Mechanical and longitudinal waves
What primarily determines the speed of a sound wave?
The medium
What is an echo an example of?
Reflection
This is what all sounds are cause by.
Vibrations
In a longitudinal sound wave, what is the name given to areas of high density?
Compression
In which phase of matter does sound typically travel the fastest?
Solid
What happens to the frequency of a wave when the wavelength is shortened.
The frequency will increase
Animals that use echolocation
Bats and Dolphins and Beluga Whales
Which property of a sound wave is most closely related to volume?
Amplitude
In which phase of matter does sound typically travel the slowest?
Gas
What causes sound to refract?
Changes in the medium's density or tempurature
How do noise-canceling headphones work?
By using destructive interference
This determines the pitch of a sound
Frequency
Why does sound travel faster in steel than in water or air?
Steel has a higher density
What happens when sound waves diffract?
They bend around or through obstacles
What does SONAR stand for
Sound Navigation and Ranging
This is the reason sound can not travel in space
Sound can not travel in a vacuum/ without a medium
This is the average speed of sound through air.
343 meters per second
This is the reason that 30 violins is louder than 1 violin
Constructive Interference
The range of human hearing (in Hz)
20 Hz to 20,000 Hz