As the temperature of a material increases, the speed of sound decreases.
False. Sound increases
100
Name the three parts of the human ear.
Outer Ear, Middle Ear, and Inner Ear
100
The organ in which humans produce sounds of different pitches are the ________________ _______________.
Vocal cords
100
a reflected sound wave
echo
200
Name the three mediums that sound waves can travel through
Solids, liquids, and gases (or air)
200
The inner ear collects sound waves.
False, the outer ear
200
What type of pollution causes damage to our ears and hearing
Noise pollution
200
The two parts of a sound wave are _______________ and __________________.
Compressions and Rarefactions
200
the perception of how high or low a sound is; related to the frequency of a sound wave
pitch
300
Name the four parts of a transverse wave
Amplitude, crest, trough, and wavelength
300
When your vocal cords contract, the pitch of your voice is higher.
True
300
What part of the ear amplifies sound waves as vibrations travel through the three tiny bones.
The middle ear.
300
The three tiny bones in the inner ear are called the hammer, the anvil, and the _____________.
Stirrup.
300
The distance between a point on a wave and the nearest point just like it. Example: the distance between one compression and the next compression.
Wavelength
400
Name the two types of waves.
Transverse and longitudinal
400
When there is a high amount of energy the decibel level is low.
False. decibel level is high
400
What is the small fluid-filled chamber in the inner ear called?
Cochlea
400
The ____________ scale is one way to compare the loudness of sounds. The pain threshold for our ears is 120.
Decibel
400
Number of wavelengths that pass a given point in one second. The SI unit is hertz (Hz)
Frequency
500
Multiple choice: the loudness of a sound wave depends on which one of these? (A) amplitude (B) frequency (C) pitch (D) wavelength
(A) amplitude
500
A sound wave is a longitudinal wave that can travel only through matter.
True
500
The speed (S) of sound is equal to the distance (d) something travels divided by the time it takes to cover the distance (d). How fast is a sound wave traveling if it travels 100 m in 10 seconds.
10 m/s
500
The region in a sound wave where the particles are far apart is the called the _______________.
Rarefaction
500
The region in a sound wave where the particles are closer together.