Wave Basics
The number of complete waves that pass a point in a given time.
Frequency
What do particles do when sound waves transfer energy?
Particles collide with one another.
The speed of sound is fastest in this state of matter, where particles are closest together and can transfer vibrations most efficiently.
Solid
What did the longer meter stick represent when it comes to pitched sounds?
Longer sticks vibrate slower, producing lower-pitched sounds.
The height of a wave from the starting position to its peak or valley. The bigger it is, the louder the sound.
Amplitude
This form of energy is STORED energy such as in a compressed spring.
Potential energy
How does sound travel differently in liquid compared to gases?
Sound travels faster in liquids than gases due to particle density.
When an initial force hits a sound source, what happens to its surface?
The surface deforms.
What unit is used to measure frequency?
Hertz
This is the process by which energy moves from one place to another.
Energy transfer
Sound requires this to travel, which can be a solid, liquid, or gas. Without this, sound cannot propagate.
Matter
What did the sealed container experiment with the phone explain to us?
It showed that sound needs a medium to travel (gas, solid, liquid.)
Higher frequency results in a ______ pitch/lower frequency results in ______ pitch
Higher frequency results in a higher pitch/lower frequency results in lower pitch
In our phenomenon, how did the speaker in the truck transfer energy?
Vibrations from a speaker transferring energy to air particles.
When sound waves travel through a solid, they cause this type of motion in the particles of the medium.
What happens to sound when there is no matter?
It cannot travel, thus you cannot hear any sound.
This term describes the highness or lowness of a sound, which is related to the frequency of the wave.
Pitch
In a loudspeaker, electrical energy is converted into this type of energy.
Sound energy
Sound in space?
Sound cannot travel in space as there are no particles to transmit it.
This part of the ear vibrates in response to sound waves and is located between the outer ear and the inner ear, transmitting vibrations to the cochlea.
Eardrum