Physics Wave/Sound Review Flashcards
Amplitude
Height from the midline
Order of the electromagnetic spectrum
Radio, Microwave, Infrared, Visible Light, Ultra violet, x-ray, Gamma rays
Radio and television have what energy, frequency, and wavelength
Low energy, ow frequency, and long wavelength
Gamma rays have what energy, frequency, and wavelength
High energy, high frequency, short wavelength
How does a Decibel Scale work
Logarithmic, every 20 dB increase, you multiple 10
Medium
Air, water, metals
Pitch
How high or low a note is
Periodic wave
number of waves produced per unit of time
Frequency
repetitive series of pulses
Vibrate
to move back and forth rapidly
Transverse wave
The disturbance is PERPENDICULAR to the direction of the waves travel.
Longitudinal wave
the disturbance is PARALLEL to the direction of the waves travel
Surface wave
When medium’s particle follow a circular path; either both perpendicular and parallel at times.
A wave carries what through space
energy
WHat are the names of the three bones that are evolutionary important to human eharing
Stapes, Incus, Malleus
Mathematical difference between frequency and period
They are inverses of each other
Frequency
How many cycles of an oscillation occur per second
Period
Amount of time it takes a wave to vibrate one full cycle
What is the speed of sound in air at 20 degrees Celsius
343m/s
How do you determine the speed at any other degree Celsius
You add 0.6 for every increase in 1 degree celsius
What is the major difference between S and P waves
P waves can travel through liquids, solids, and gases
S waves can only travel through solids (stops at outer core)
Doppler effect
The change in frequency of sound caused by movement of either the source, the detector, or both
What are four applications of the Doppler effect
Speed of baseball/cars
Astronomers
Physicians
Bats
Pitch
The highness or lowness of a sound
Loudness
The intensity of the sound as perceived by the ear and interpreted by the brain
How are pitch and loudness related to waves
They both relate to waves because pitch relates to the frequency and the loudness related to the amplitude
What is wavelengths symbol named
Lambda
What is wavelength measured in
Meters
The number of waves that pass a point in 1 second
Frequency
Any disturbance that carries energy and travels through matter
Wave
A special kind of wave that does not need to travel through matter
Electromagnetic wave
A low energy wave that can be used to transmit communications
Radio Waves
High energy waves that can be used to treat cancer
Gamma Rays
A type of radio wave that can be used to measure speed and position
Radar
Transmits thermal energy, hear releases more of it
Radiant energy
The energy carried by an EM wave, we feel as heat
Infrared Waves
The distance from one wave crest to the next wave crest
Wavelength
The fastest that any EM wave can travel
Speed of light
High energy waves that can be used to take pictures of bones
X Rays
A type of electromagnetic wave that behaves as a particle
Photon
A type of radio wave that can be used to cook food
Microwaves
The part of electromagnetic spectrum that we can see
Visible Light
Sun rays, can damage skin
Ultraviolet Waves
Sound Wave
A pressure oscillation that is transmitted through matter
Sound is what type of wave
Longitude wave
Sound level
Measure of intensities on a logarithmic scale
Decibel
Unit of measurement for sound level
Two characteristic that are affected by the medium through which sound passes
Velocity and wavelength
Two characteristics that not NOT affected by the medium through which sound passes
frequency and period
Blue shifted
When light source approached observer, there is an increase in measured frequency, so wavelength of light shortens
Red shifted
When a light source recedes from observer this is the decrease in measured frequency, so wavelength lengthens.
