waves

Question 1

wave

Answer 1

a repeating disturbance or movement that transfers energy through matter or space

Question 2

medium

Answer 2

the matter the waves travel through

Question 3

transverse wave

Answer 3

where matter in the medium moves back and forth at right angles to the direction the wave travels

Question 4

compressional wave

Answer 4

where matter in the medium moves back and forth along the same direction that the wave travels

Question 5

sound waves

Answer 5

compressional waves

Question 6

water waves

Answer 6

not purely transverse wave

Question 7

seismic waves

Answer 7

a combination of compressional and transverse waves

Question 8

crests

Answer 8

alternating high points

Question 9

troughs

Answer 9

alternating low points

Question 10

rarefaction

Answer 10

less dense region of a compressional wave

Question 11

wavelength

Answer 11

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

Question 12

frequency

Answer 12

the number of wavelengths that pass a fixed point each second

Question 13

amplitude

Answer 13

related to the energy carried by a wave

Question 14

refraction

Answer 14

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

Question 15

diffraction

Answer 15

it occurs when an object causes a wave to change direction and bend around it

Question 16

interference

Answer 16

when two or more waves overlap and combine to form a new wave

Question 17

standing wave

Answer 17

wave pattern that forms when waves equal in wavelength and amplitude, but travel in different directions, continuously interfere with each other

Question 18

resonance

Answer 18

an object is made to vibrate by absorbing energy at its natural frequencies

Question 19

eardrum

Answer 19

a tough membrane about .1 mm thick

Question 20

cochlea

Answer 20

a spiral shaped structure that is filled with liquid

Question 21

intensity

Answer 21

the amount of energy that flows through a certain area in a specific amount of time

Question 22

loudness

Answer 22

human perception of sound intensity

Question 23

decibel

Answer 23

unit for sound intensity

Question 24

pitch

Answer 24

how high and low sound seems to be

Question 25

ultrasonic

Answer 25

sound frequencies over 20,000 Hz

Question 26

Doppler effect

Answer 26

change in pitch or wave frequency due to a moving wave source

Question 27

music

Answer 27

made of sounds that are deliberately used in a regular pattern

Question 28

sound quality

Answer 28

the differences among sounds of the same pitch and loudness

Question 29

overtone

Answer 29

vibration whose frequency is a multiple of the fundamental frequency

Question 30

resonator

Answer 30

hollow chamber filled with air that amplifies sound when the air inside of it vibrates

Question 31

acoustics

Answer 31

study of sound

Question 32

echolocation

Answer 32

process of locating objects by emitting sounds and interpreting the sound waves that are reflected back

Question 33

sonar

Answer 33

a system that uses the reflection of underwater sound waves to detect objects