Chapters 16-18

Question 1

Two colors whose addictive mixture is white are called —— colors.

Answer 1

complementary colors

Pg. 273

Question 2

The primary colors of light include all of the following except ——.

Answer 2

Primary colors of light: red, green, blue

Pg. 273

Question 3

Which electromagnetic radiation has the shortest wavelength?

Answer 3

Gamma rays

Pg. 270

Question 4

What wave phenomenon does sonar take advantage of?

Answer 4

Reflected sound is called an echo

Pg. 245

Question 5

The outline of maximum displacement for a standing wave is called the —–.

Answer 5

envelope of oscillation

Pg. 250

Question 6

Any point that moves with the combined energy of two waves is called a(n) —–.

Answer 6

composite wave train

Pg. 248

Question 7

The spreading out of a wave after passing through a narrow opening is called —–.

Answer 7

diffraction

Pg. 247

Question 8

A water wave is an example of a —— wave.

Answer 8

two-dimensional

Pg. 241

Question 9

What is the wave speed of a wave that has a wavelength of 1.8 m and a frequency of 500 Hz?

Answer 9

v (wave speed) = £(wavelength) f(frequency)

Question 10

The number of waves that pass a given point per unit time is called the —– of a wave train.

Answer 10

frequency

Pg. 239

Question 11

The maximum displacement of a wave is called —–.

Answer 11

amplitude

Pg. 240

Question 12

Distance from one wave crest to the next is called the —–.

Answer 12

wavelength

Pg. 240

Question 13

The amount of energy flowing per unit time through a unit area at right angles to wave motion is the definition for sound —–.

Answer 13

waves

Pg. 253

Question 14

When one note has a frequency double that of another note, these tow notes are perceived as a(n) —–.

Answer 14

octave

Pg. 264

Question 15

The —– holds that light exhibits properties of both waves and particles.

Answer 15

wave-particle duality

Pg. 268

Question 16

The portion of the electromagnetic spectrum to which our eye responds is known as —–.

Answer 16

Visible light

Pg. 270

Question 17

The color of the combination of all colors of light is —–.

Answer 17

white

Pg. 272

Question 18

The subtractive primaries of pigment are the same as the additive —– colors of light.

Answer 18

secondary

Pg. 275

Question 19

The color of a surface that reflects between 10% and 80% of the light at any frequency is —–.

Answer 19

gray

Pg. 274

Question 20

True/False

Sound waves are (traverse) waves.

Answer 20

longitudinal

Pg. 252

Question 21

The sound of a speeding car is (higher) in pitch as the car approaches a stationary listener.

Answer 21

True

Pg. 256

Question 22

An increase of 10dB means that the original intensity increased (ten)-fold.

Answer 22

True

Pg. 261

Question 23

The ear is a (linear) receiver of sound intensity.

Answer 23

nonlinear

Pg. 261

Question 24

The intensity of a sound related to the distance between the source and the listener is a (direct) square relationship.

Answer 24

inverse

Pg. 260

Question 25

(Diffraction) is most pronounced when the opening wave passes through is not much greater than one wavelength.

Answer 25

true

Pg. 247

Question 26

Light of a single frequency or within a range of frequencies corresponding to the same color is called (chromatic) light.

Answer 26

monochromatic

Pg. 271

Question 27

(Brightness) refers to an object’s possession of some color quality, such as redness or blueness.

Answer 27

Hue

Pg. 274

Question 28

Who discovered the property of rectilinear propagation?

Answer 28

Alhazen

Pg. 266

Question 29

Who discovered the property of interference?

Answer 29

Young

Pg. 268

Question 30

Who discovered consists of corpuscles?

Answer 30

Newton

Pg. 267

Question 31

Who discovered contains of infrared rays?

Answer 31

Herschel

Pg. 268

Question 32

Who discovered belongs to electromagnetic spectrum?

Answer 32

Maxwell

Pg. 268

Question 33

Write the equation for:

Determines the speed of a wave when only wavelength and frequency are known.

Answer 33

v= lambda• frequency (f)

Question 34

Determines the loudness of sound in decibels

Answer 34

B (beta) = 10•log (I) intensity
——————————
(1• 10^-12 W/m^2) original intensity

Pg. 262

Question 35

Determines the energy of a photon or quanta

Answer 35

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

Question 36

Short answer

State the law of reflection

Answer 36

It is true for all reflection that the angle of incidence and the angle of reflection are equal.
Pg. 245

Question 37

Contrast transverse waves and longitudinal waves

Answer 37

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

Question 38

What is a shockwave, and what must happen to air in order for a shock wave to occur?

Answer 38

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

Question 39

See problems 39 - 44.

Answer 39

Q