science chapter 16

Question 1

A material in which a wave travels

Answer 1

mediums

Question 2

sound waves with low frequencies are

Answer 2

more apart and slow

Question 3

sound waves with high frequencies are

Answer 3

closer together and faster.

Question 4

sound waves travel at different speeds through different materials because of

Answer 4

different objects have different densities

Question 5

the eardrum is

Answer 5

in the middle ear. It amplifies the sound, causing the eardrum to vibrate.

Question 6

sound waves are

Answer 6

longitudinal

Question 7

determines how close together the particles are in the compression region

Answer 7

amplitude

Question 8

an increase to amplitude that occurs when an object vibrating at its natural frequency absorbs energy from a nearby object vibrating at the same frequency.

Answer 8

resonance

Question 9

sound waves travel in liquids, solids, and gasses, making them

Answer 9

mechanical waves

Question 10

A region of a longitudinal wave where the particles in the medium are closest together

Answer 10

compression

Question 11

a region of a longitudinal wave where the particles are farthest apart.

Answer 11

rarefaction

Question 12

sounds travel faster in _____ rather than air

Answer 12

water

Question 13

sounds travel faster in solid materials because..?

Answer 13

the matter is denser, making the particles closer together.

Question 14

gasses transfer more energy at _____ temperatures

Answer 14

higher

Question 15

gasses travel faster at ___ temps, while solids/liquids travel faster at ___ temps

Answer 15

higher, lower

Question 16

sound waves travel the fastest when they are in

Answer 16

ice

Question 17

the outer part of the human ear

Answer 17

collects sound waves

Question 18

the middle part of the human ear

Answer 18

amplifies sound

Question 19

the inner part of the human ear

Answer 19

sends sound signals to the brain

Question 20

tears in the eardrum cause

Answer 20

hearing loss

Question 21

as a sound wave increases, its

Answer 21

amplitude increases

Question 22

the amount of sound energy that passes through a square meter of space in one second

Answer 22

intensity

Question 23

unit for decibel

Answer 23

dB

Question 24

when wavelength decreases, its frequency

Answer 24

increases

Question 25

the perception of how high or low a sound is

Answer 25

pitch

Question 26

higher frequencies = ______ pitches (vocal ranges)

Answer 26

higher

Question 27

frequency ________as the distance between the source and the listener ________

Answer 27

decreases, increases

Question 28

the change of pitch when a sound source is moving in relation to an observer

Answer 28

doppler effect

Question 29

occurs when waves overlap/combine

Answer 29

interference

Question 30

repeating increases and decreases in amplitude

Answer 30

beats

Question 31

The lowest frequency at which a material naturally vibrates

Answer 31

fundamental

Question 32

Higher frequencies at which the material vibrates

Answer 32

overtone

Question 33

When sound waves move from air to a wall, the vibrations of air particles cause particles in the wall to vibrate.

Answer 33

transmission

Question 34

The transfer of energy by a wave to the medium through which it travels

Answer 34

absorption

Question 35

The bouncing of a wave off a surface

Answer 35

reflection

Question 36

A reflected sound wave

Answer 36

echo

Question 37

The collection of reflected sounds from the surfaces in a closed space

Answer 37

reverberation

Question 38

The study of how sound interacts with structures

Answer 38

acoustics

Question 39

The process an animal uses to locate an object by means of reflected sounds

Answer 39

echolocation

Question 40

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

Answer 40

sonar

Question 41

Distance =

Answer 41

speedxtime

Question 42

Speed =

Answer 42

distance/time

Question 43

scanners that non-harmfully scan parts of your body

Answer 43

ultrasounds