Chapter 9: Introduction to Waves

Question 1

a repeating disturbance that transfers energy through matter or space

Answer 1

wave

Question 2

matter through which a wave travels

Answer 2

medium

Question 3

waves that can only travel through matter

Answer 3

mechanical waves

Question 4

in this type of wave, particles in the medium moves back and forth at right angles to the direction that the wave travels

Answer 4

transverse wave

Question 5

in this type of wave, matter in the medium moves back and forth along the same direction that the wave travels

Answer 5

longitudinal wave

Question 6

the high points of a transverse wave

Answer 6

crests

Question 7

the low points of a transverse wave

Answer 7

troughs

Question 8

the more dense region of a longitudinal wave

Answer 8

compression

Question 9

the less-dense regions of a longitudinal wave

Answer 9

rarefaction

Question 10

the distance between one point on a wave and the nearest point just like it

Answer 10

wavelength

Question 11

the number of wavelengths that pass a fixed point each second

Answer 11

frequency

Question 12

the amount of time it takes one wavelength to pass a point

Answer 12

period

Question 13

the measure of the size of the disturbance from a wave

Answer 13

amplitude

Question 14

the bending of a wave caused by a change in its speed as it travels from one medium to another

Answer 14

refraction

Question 15

the bending of a wave around an object

Answer 15

diffraction

Question 16

the process of two or more waves overlapping and combining to form a new wave

Answer 16

interference

Question 17

a special type of wave pattern that forms when waves equal in wavelength and amplitude but traveling in opposite directions continuously interfere with each other

Answer 17

standing wave

Question 18

locations where the interfering waves always cancel

Answer 18

nodes

Question 19

the process by which an object is made to vibrate by absorbing energy at its natural frequencies.

Answer 19

resonance

Question 20

wave speed formula:

Answer 20

speed (m/s) = frequency (Hz) * wavelength (m)

v = fλ

Question 21

waves travel through matter as energy is…

Answer 21

transferred from particle to particle

Question 22

waves carry energy without…

Answer 22

transporting matter

Question 23

wave properties depend on the _________________ and the __________________.

Answer 23

vibration of the wave source; material in which the wave travels

Question 24

as the amplitude of a wave increases, the disturbance from that wave…

Answer 24

increases

Question 25

waves interact with ______ and with _______ ________.

Answer 25

matter; each other

Question 26

when reflection of a wave occurs, the __________ equals the _________

Answer 26

angle of incidence; angle of reflection