Waves

Question 1

speed of light

Answer 1

c=3.0 x 10^8

Question 2

formula for the speed of sound in air

Answer 2

V=331.5+0.606T

Question 3

frequency of a wave

Answer 3

f=v/λ

λ=wavelength

Question 4

how far the medium moves from the rest position (where it is not moving)

Answer 4

Amplitude

Question 5

the distnace between one point on a wave and the exact same place on the next wave

Answer 5

Wavelength (λ)

Question 6

how many waves go past a point in one second

Answer 6

frequency (f)

Question 7

measurement of frequency

Answer 7

Hertz (Hz)

Question 8

waves in which the medium moves at right angles to teh direction of the way

Answer 8

transverse waves

Question 9

the highest point in the wave

Answer 9

crest

Question 10

the lowest point in the wave

Answer 10

trough

Question 11

waves in which the medium moves back and forth in the same direction as the wave

Answer 11

Compressional (longitudinal) waves

Question 12

where the particales are close together

Answer 12

compression

Question 13

where the paricles are spread apart

Answer 13

rarefraction

Question 14

higher frequency; smaller wavelength

Answer 14

higher pitch

Question 15

There is an INCREASE in frequency for observers in which the source is moving toward them

Answer 15

higher pitch

Question 16

There is a DECREASE in frequency for observers in which the source is moving away from them

Answer 16

Lower pitch

Question 17

doppler effect formula

Answer 17

F-observer = [(V-sound+- V-observer)/(V-sound+-V-source)]F-true

Question 18

where is the speed of sound slowest?

Answer 18

in gases

Question 19

where is the speed of sound faster?

Answer 19

in liquids

Question 20

Where is the speed of sound fastest?

Answer 20

in Solids

Question 21

between what two frequencies can the human ear hear?

Answer 21

20 Hz and 20,000 Hz

Question 22

What are frequencies that are higher than 20,000 Hz called?

Answer 22

Ultrasonic waves

Question 23

What are frequencies that are lower than 20 Hz called?

Answer 23

Infrasonic waves

Question 24

the denser the medium, the _______ the speed of light

Answer 24

slower

Question 25

what is the spreading of light around an obstacle?

Answer 25

Diffraction

Question 26

What are waves that add together to create a larger wave?

Answer 26

Constructive interference

Question 27

What is it called when troughs and crests overlaps “canceling one another”?

Answer 27

Destructive interference

Question 28

What is it called when light passes from one medium to another?

Answer 28

Refraction

Question 29

What happens when two waves overlap with each other?

Answer 29

Wave interference

Question 30

What is the energy the metal exerts to hold onto its electrons?

Answer 30

Work function

Question 31

Formula for light

Answer 31

E=hf

Question 32

Energy of the light in Joules

Answer 32

E

Question 33

planck’s constant (h)

Answer 33

6.6310^-34 Jsec

Question 34

energy of a photon is measure in _____________

Answer 34

Electron volts (eV)

Question 35

Electron Volts formula

Answer 35

1.000eV=1.602*10^-19 J

Question 36

Planck’s constant in eV

Answer 36

4.1410^-15 eVsec

Question 37

Light comes from EM bundles or packets called what?

Answer 37

photons

Question 38

What flies off the surface of a metal when the light is shined on the metal

Answer 38

photoelectrons

Question 39

What are oscillating elctricle and magnetic fields?

Answer 39

Electromagnetic waves

Question 40

Electromagnetic waves

Answer 40

EM