Chapters 16-18 Flashcards
Two colors whose addictive mixture is white are called —— colors.
complementary colors
Pg. 273
The primary colors of light include all of the following except ——.
Primary colors of light: red, green, blue
Pg. 273
Which electromagnetic radiation has the shortest wavelength?
Gamma rays
Pg. 270
What wave phenomenon does sonar take advantage of?
Reflected sound is called an echo
Pg. 245
The outline of maximum displacement for a standing wave is called the —–.
envelope of oscillation
Pg. 250
Any point that moves with the combined energy of two waves is called a(n) —–.
composite wave train
Pg. 248
The spreading out of a wave after passing through a narrow opening is called —–.
diffraction
Pg. 247
A water wave is an example of a —— wave.
two-dimensional
Pg. 241
What is the wave speed of a wave that has a wavelength of 1.8 m and a frequency of 500 Hz?
v (wave speed) = £(wavelength) f(frequency)
The number of waves that pass a given point per unit time is called the —– of a wave train.
frequency
Pg. 239
The maximum displacement of a wave is called —–.
amplitude
Pg. 240
Distance from one wave crest to the next is called the —–.
wavelength
Pg. 240
The amount of energy flowing per unit time through a unit area at right angles to wave motion is the definition for sound —–.
waves
Pg. 253
When one note has a frequency double that of another note, these tow notes are perceived as a(n) —–.
octave
Pg. 264
The —– holds that light exhibits properties of both waves and particles.
wave-particle duality
Pg. 268
The portion of the electromagnetic spectrum to which our eye responds is known as —–.
Visible light
Pg. 270
The color of the combination of all colors of light is —–.
white
Pg. 272
The subtractive primaries of pigment are the same as the additive —– colors of light.
secondary
Pg. 275
The color of a surface that reflects between 10% and 80% of the light at any frequency is —–.
gray
Pg. 274
True/False
Sound waves are (traverse) waves.
longitudinal
Pg. 252
The sound of a speeding car is (higher) in pitch as the car approaches a stationary listener.
True
Pg. 256
An increase of 10dB means that the original intensity increased (ten)-fold.
True
Pg. 261
The ear is a (linear) receiver of sound intensity.
nonlinear
Pg. 261
The intensity of a sound related to the distance between the source and the listener is a (direct) square relationship.
inverse
Pg. 260
(Diffraction) is most pronounced when the opening wave passes through is not much greater than one wavelength.
true
Pg. 247
Light of a single frequency or within a range of frequencies corresponding to the same color is called (chromatic) light.
monochromatic
Pg. 271
(Brightness) refers to an object’s possession of some color quality, such as redness or blueness.
Hue
Pg. 274
Who discovered the property of rectilinear propagation?
Alhazen
Pg. 266
Who discovered the property of interference?
Young
Pg. 268
Who discovered consists of corpuscles?
Newton
Pg. 267
Who discovered contains of infrared rays?
Herschel
Pg. 268
Who discovered belongs to electromagnetic spectrum?
Maxwell
Pg. 268
Write the equation for:
Determines the speed of a wave when only wavelength and frequency are known.
v= lambda• frequency (f)
Determines the loudness of sound in decibels
B (beta) = 10•log (I) intensity
——————————
(1• 10^-12 W/m^2) original intensity
Pg. 262
Determines the energy of a photon or quanta
E=hf
h (Planck’s constant)= 6.63•10^-34 J•s
c E=h—— lambda
c (speed of light in a vacuum) = 3•10^8 m/s
Short answer
State the law of reflection
It is true for all reflection that the angle of incidence and the angle of reflection are equal.
Pg. 245
Contrast transverse waves and longitudinal waves
Transverse waves are waves that travel in an up and down motion of individual particles that are perpendicular to the direction of the wave motion; whereas, longitudinal waves are waves due to particles oscillating parallel to the direction of wave motion.
Transverse pg. 236
Longitudinal pg. 243
What is a shockwave, and what must happen to air in order for a shock wave to occur?
A shockwave is a violent disturbance traveling outward and caused when an object breaks the sound barrier. In order for a shockwave to occur air molecules are thrown into large displacements from which they can not return.
Pg. 258
See problems 39 - 44.
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