Waves and Sounds
Terms
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- Wave
- Waves are a model for explaining the transfer of energy from one location to another without transferring matter
- what is an echo
- The reflection of sound wave off of a barrier ofr other reflective surface. The wave travels twice the distance to the barrier to return back to the source of the sound
- Transverse waves
- the particles vibrate perpendicular to the direction of travel.
- what happens to the speed of sound as temperature changes
- As the temperature increases the speed of sound increases the speed of sound increase acccording to the formula.
- Trough
- The bottom of a wave
- what creates all wave motion? What creates sound waves?
- vibrating
- If the amplitude of a wave is 2 meters, what is the total top to bottom distance of the disturbance
- double the amplitude or 4 meters
- If a wave loses energy to what will happen to the wave
- The amplitude of the wave decreases
- medium
- determines the speed of a wave/ carries the wave.
- interference
- A pattern formed by the overlapping of two or more waves that arrive in a region at the same time
- wavelength
- The distance from the top of the crest of wave to the of the following crest, or equivalently; the distance between succesive intentual parts of a wave
- what are some everyday uses of reflected sound?
- Ultrasound medical imaging, ultra sonic range finders on cameras,,sonar, etc.
- transverse
- A wave with vibration at right angles to the direction from a crest
- Does sound travel faster in solid, liquid or gas
- Solids>liquids>gases> The more rigidly fixed the molecules the faster the transmission of mechanical waves.
- what is the difference between longitudnal and transverse waves
- longitudinal and Transverse waves
- If frequency triples what happenss to the wavelength(speed stays the same
- wavelengh will decrease by 1/3
- hertz
- The Si unit of frequency one hertz is one vebration per second
- compression
- In mechanics, the act of squeezing material and reducing its volume.
- Compressional or Longitudinal
- he particles of a medium vibrateback and forth in the same direction(parallel) to the direction in which the waves travel.
- Crest
- The top or peak of a wave.
- What are the two primary types of waves
- mechanical waves and electromagnetic waves
- Amplitude
- The distance from equilibrium or rest position to the crest
- wat are beats the result of
- The recrring combination of consructive and desrucutive interference when two frequencies occur at the same time
- period
- The time required to orbit
- Electromagnetic waves
- Do not require a medium(ex. light, microwaves, x-rays)
- Mechanical Waves
- require a medium(examples: sound, water)
- frequency
- number of events per time; measured in hertz. Inverse of period
- longitudinal
- A wave in which the vibration is in the same direction the wave is traveling
- What is resonance?
- A vibration in an object when exposed to sound waves that match the natural frequency of the object
- reflection
- The bouncing back of a particle or wave that strikes the boundary between two media
- What happens to a sound wave if the amplitude is decreased? Increased?
- You decrease the energy carried in the wave when you decrease the amplitude, you increase the energy carried in the wave when you increase the amplitude
- electromagnetic
- magnet with a field produced by electric current; usually in the form of wire corled around a piece of iron
- what type of wave is a sound wave
- A sound wave can be described as both a mechanical wave and a longitudinal wave
- IF a wave loses energy to heat, what will happen to the wave
- decreases amplitude
- Whaat occurs if sound waves have constructive interference with other waves? Destructive interference?
- You increase the amplitude or loudness of the sound. You decrease the amplitude or it gets quieter