Term
| What are waves? (In general, 3 points) |
|
Definition
- traveling "disturbance"
- carry energy from place to place
- create no "bulk flow" outward from sources |
|
|
Term
|
Definition
| Require a medium in order to travel |
|
|
Term
|
Definition
| Substance that transmits waves via vibrations of its particles |
|
|
Term
| Examples of Mechanical Waves |
|
Definition
| Sound, seismic, water wave, wave on string |
|
|
Term
|
Definition
| Dont require a medium to travel |
|
|
Term
| Examples of Electromagnetic waves |
|
Definition
| light, radio, microwaves, infrared |
|
|
Term
|
Definition
(squiggly) medium travels perpendicular to the wave
Parts: Crest, wavelength, trough, amplitude |
|
|
Term
|
Definition
(slinky/spring type) medium travels perpendicular to the wave's direction
Parts: compression rarefaction, wavelength |
|
|
Term
|
Definition
number of waves, or, cycles, per unit of time
Units used is Hz |
|
|
Term
|
Definition
| time required for one wave to pass, or, travel one wavelength |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Mechanical, Longitudinal, created by a vibrating object |
|
|
Term
|
Definition
| Perceived highness/lowness of a sound |
|
|
Term
| What does the speed of sound rely on? |
|
Definition
The medium it travels through as well as temperature
(Transmission of sound relies on the touching/colliding of molecules) |
|
|
Term
| How fast does a wave travel at room temp? |
|
Definition
|
|
Term
| Sounds travel fastest through what type of medium? |
|
Definition
| Solids (because the molecules are always touching each other) |
|
|
Term
|
Definition
Amount of energy a wave carries (W)
[Determined by amplitude, therefore, affects volume) |
|
|
Term
|
Definition
| Sound power that passes through an area |
|
|
Term
| What does sound do as it spreads out from the source? |
|
Definition
It goes through a larger area
Intensity DECREASES as distance increases (inverse relationship) |
|
|
Term
|
Definition
|
|
Term
| What shape forms if a sound is emitted in all directions? |
|
Definition
|
|
Term
| Faintest sound humans can hear is what? |
|
Definition
1.00 x 10(-12) W/m(2)
Also known as the threshold of hearing |
|
|
Term
|
Definition
| measured in dB and relates to the threshold of hearing. AKA, intensity level |
|
|
Term
|
Definition
| change in frequency perceived by someone caused by the relative movement of the sound source |
|
|
