Flashcards in Chapter 10 Test Deck (24):
What causes sound?
When matter vibrates
How do air molecules enable sound to travel from a radio to your ears?
The particles in the air are close together so when one vibrates they all start to vibrate which cause the sound to move
How does the ringing sound of a telephone travels from the phone to your ear?
The ringer vibrates
Medium would travel through steel faster because...
Because the particles vibrate together because they are so close.
Would medium travel faster in colder or warmer water?
The warmer water because the molecules are moving faster
Amplitude of a compressional wave
Refers to the density of the particles
Loudness and intensity are related to the amplitude and energy of a wave how?
Work together to create the pitch
Decibel unit of measure
What does hertz measure?
Abbreviation of hertz
Abbreviation for decibel
Frequency of a wave
# of wavelengths that pass a fixed point in one second
Why would reverberations be a problem when using a gym for a concert?
There would be endless echoes and all of the sounds would come together and mix with each other
Designing a concert hall well?
Echoes and they could be reduced by fabric on the walls and carpet on the floor and curved walls
When to use ultrasound?
When there is an injury on the soft tissue inside the body
X rays are used to see what?
Sound is caused by...
Ultrasound is used to break up...
The bowl of a kettle drum that amplifies sound is called...
Loudness is determined by...
The intensity of a sound
As you move away from a warning siren, the pitch...
Multiples of the fundamental frequency are called...
Noise is sound without...
A set pattern