Physics Sound Flashcards
IWhat type of wave is sound
Longitudinal wave
Longitudinal wave defenition
These waves vibrate parallel to the direction of energy transfer
Pitch defenition
The frequency of a sound wave
Loudness defenition
A measure of the amplitude of a soundwave
Wavelength definition
The distance fron a wave point to the same point on the next wave
Amplitude definition
The maximum displacement of a wave from its equilibrium position(the middle line)
What frequencies can humans hear ?
20 hz to 20000 hz
What is the formula for frequency(F)?
Number of waves÷time=__Hz
What are frequencies under 20 Hz called?
Infrasound
What is the equation of wave speed
Distance÷Time or
Frequency × Wavelength
What is ultra sound
Frequencies that are too high to be heard by human audibility
What is infrasound?
Frequencies that are too low to be heard by human audibility.
What are uses of sound?
1.Communication
2.Animals
3.Industry (theatre and machinery)
4.Medical
5.Safety
6. Hypnosis
Echolocation template
Send out a soundwave
Soundwave reflects off object
Measure time and halve it
Speed of sound in medium known
S=d÷t
Build picture
