What is Sound?
Sound is this type of wave
longitudinal
The SI Unit of Sound is the...
Hertz Hz
The human ear has these three parts.
inner ear, middle ear, outer ear
The perception of how high or low a sound seems is called...
pitch
Loudness or softness depends on the amount of energy carried by a sound wave, also called...
amplitude
This movement produces sound
vibration
True of False: the speed of sound through dry air is 331 m/s at 0oC.
True
This part of the outer ear acts like a funnel for sound.
ear canal
The two membranes found in your trachea are called...
vocal chords
Amplitude of sound is measured in this unit...
decibel
When a sound causes particles to move closer together in a wave it is called a...
compression
Sound travels fastest through a solid, a liquid, or a gas?
solid
The middle ear has these three parts that work like a team.
hammer, anvil, stirrup
As you increase the frequency of a sound wave, you will make the pitch higher or lower?
higher
What has more decibels: a purring cat or a lawn mower?
lawn mower
When a sound causes particles to move farther apart in a wave it is called a
rarefaction
If you increase the temperature of a medium, sound waves will travel faster or slower through the matter?
faster
This part of the inner ear is filled with little hair cells called cilia that transmit signals to the brain.
cochlea
Unlike X-rays, this frequency of sound waves can be used to see inside the body, including soft structures.
ultrasound
Normal conversation happens at about this level of decibels.
50 dB
the distance between a point on a wave and the next point like is called the wave's....
frequency
Sound travels fastest through this type of very hard material.
diamond
Order from lowest to highest, the ability to hear the highest frequencies of sound: bats, dogs, humans, cats, whales
humans, dogs, cats, bats, whales
What is the speed of a sound wave travelling 100 000 m/s in 2 seconds - what creature can hear it?
50 000 m/s - a cat or bat or a whale!
Sonar uses sound waves to locate an object under water using a reflected sound wave called an ________, in a process/technique called __________.
echo, echolocation