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

Matter in the medium moves back and forth at right angles to the direction that the wave travels.

Question 4

Compressional Wave

Answer 4

Matter in the medium moves back and forth along the same direction that the wave travels.

Question 5

Sound Waves

Answer 5

the pattern of disturbance caused by the movement of energy traveling through a medium.

Question 6

Water Waves

Answer 6

disturbances on the surface of a body of water that propagate, or travel, through the water.

Question 7

Seismic Waves

Answer 7

an elastic wave in the earth produced by an earthquake or other means.

Question 8

Crests

Answer 8

high points in transverse wave.

Question 9

Troughs

Answer 9

low points in transverse wave.

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

of a wave is 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

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

Question 15

Diffraction

Answer 15

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

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.

Question 18

Reonance

Answer 18

the process by which 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 and contains tiny hair cells.

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

the human perception of sound intensity.

Question 23

Decibel

Answer 23

each unit on the scale for sound intensity is called this.

Question 24

Pitch

Answer 24

how high or low a sound seems to be.

Question 25

Ultrasonic

Answer 25

most people can't hear sound frequencies above 20,000 Hz, which are ultrasonic Waves.

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

describes the differences among sounds of the same pitch and loudness.

Question 29

Overtone

Answer 29

a vibration whose frequency is a multiple of the fundamental frequency.

Question 30

Resonator

Answer 30

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

Question 31

Acoustics

Answer 31

the study of sound.

Question 32

Echolocation

Answer 32

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

Question 33

Sonar