Ch. 1 Sound and Light

Question 1

the bouncing back of a wave from a surface

Answer 1

reflection

Question 2

the number of waves that pass a point in a certain time

Answer 2

frequency

Question 3

a disturbance involving the transfer of energy from place to place

Answer 3

wave

Question 4

the ability to do work

Answer 4

energy

Question 5

the material through which a wave travels

Answer 5

medium

Question 6

waves that require a medium to travel

Answer 6

mechanical waves

Question 7

a repeated back-and-forth or up-and-down motion

Answer 7

vibration

Question 8

a wave that vibrates the medium at right angles, or perpendicular, to the direction in which the wave travels

Answer 8

transverse wave

Question 9

the high point on a transverse wave

Answer 9

crest

Question 10

the low point on a transverse wave

Answer 10

trough

Question 11

a wave that moves the medium in a direction parallel to the direction in which the wave travels

Answer 11

longitudinal wave

Question 12

an area where coils are close together

Answer 12

compression

Question 13

an area where the coils are spread out

Answer 13

rarefaction

Question 14

combinations of transverse and longitudinal waves Ex: ocean waves

Answer 14

surface waves

Question 15

the maximum distance the medium vibrates from the rest position

Answer 15

amplitude

Question 16

the distance between two corresponding parts of a wave

Answer 16

wavelength

Question 17

the number of waves that pass a given point in a certain amount of time

Answer 17

frequency

Question 18

unit of measurement for frequency

Answer 18

hertz (Hz)