Show:
Waves: Lesson 1
Waves: Lesson 2
Sound: Lesson 1+2
Sound
Misc.
100
A repeated back and forth or up and down motion is _________.
Vibration
100
The distance from the crest to the resting point is called the...
amplitude
100
A disturbance that travels through a medium as a longitudinal wave is...
sound
100
The ______ of a sound you hear depends on the frequency of the sound wave.
pitch
100
What are the three smallest bones in the body?
hammer, anvil, and stirrup
200
The high point of a transverse wave is the _________.
Crest
200
The distance between crests is called...
wavelength
200
A sound wave begins with a...
vibration
200
The ______ of a sound wave depends on how fast the source of the sound is vibrating.
frequency
200
The ______ is a liquid filled cavity in your ear that's shaped like a snail shell.
cochlea
300
A ______________ vibrates the medium in the same direction the wave travels.
Longitudinal wave
300
The number of waves that pass a given point in a certain amount of time is called...
frequency
300
Sound waves carry ___________ through a medium.
energy
300
Frequency is measured in _______.
hertz (Hz)
300
Sound waves make your ________ vibrate.
eardrum
400
Sound travels the slowest in ________.
Gas
400
Hertz is _______.
the unit frequency is measured in.
400
The three types of medium are...
solid, liquid, and gas
400
The loudness of different sounds is compared using a unit called ________.
decibel (dB)
400
What are sound waves with frequencies above the normal human range of hearing?
ultrasound
500
Sound travels ________ in higher temperature than cold temperatures.
Faster
500
Light travels about ______ times faster than sound.
1 million
500
Speed of sound depends on ______, _______, and _______ of the medium it's traveling through.
temperature, density, stiffness
500
The change in frequency of a wave as its source moves in relation to an observer is called the...
Doppler Effect
500
The use of reflected sound waves to determine distances or to locate objects is called...
echolocation