Waves

Question 0

The material through which a wave travels(water or air)

Answer 0

Medium

Question 1

A disturbance that carries energy through matter or space

Answer 1

Wave

Question 2

Waves that require a medium to travel through(most waves)

Answer 2

Mechanical waves

Question 3

Waves that do not require a medium(light,radio,X-ray)

Answer 3

Electromagnetic waves

Question 4

A single disturbance that travels through the medium

Answer 4

Wave pulse

Question 5

A wave in which the particles of the medium vibrate perpendicular to the direction the wave is moving

Answer 5

Transverse wave

Question 6

A continuous series of disturbances caused by a source in simple harmonic motion

Answer 6

Traveling wave

Question 7

The highest point on a transverse wave

Answer 7

Crest

Question 8

The lowest point on a transverse wave

Answer 8

Trough

Question 9

The distance from one point on a wave to the next identical point(symbol-upside down y unit-meters)

Answer 9

Wavelength

Question 10

The rate at which the wave energy travels forward through the medium

Answer 10

Velocity

Question 11

The time for one complete wave to pass a fixed point or the time for one complete wave cycle

Answer 11

Period

Question 12

The number of complete waves that pass a point in a certain time interval or the number of complete wave cycles each second(hz)

Answer 12

Frequency

Question 13

The maximum distance that a particle of the medium is displaced from its normal rest position (symbol-f units-hz

Answer 13

Amplitude

Question 14

A wave in which the particles of the medium vibrate parallel to the direction the wave is traveling

Answer 14

Longitudinal wave

Question 15

Points on the medium that have particles pressed tightly crowded together

Answer 15

Compressions

Question 16

Points on the medium that are stretched out particles are far apart

Answer 16

Rarefactions

Question 17

A compression(longitudinal wave) created by a vibrating object that travels through a medium

Answer 17

Sound

Question 18

343 m/s in air at room temp, travel faster in warm air add .6 for each degree increase in temp

Answer 18

Speed of sound

Question 19

Amplitude of a sound wave perceived by humans

Answer 19

Loudness

Question 20

Loudness(amplitude) of a sound wave is measured in

Answer 20

Decibels (db)

Question 21

The number of vibrations(compressions) per second

Answer 21

Frequency

Question 22

The lowness of highness of a note(human perception of frequency)

Answer 22

Pitch

Question 23

Frequencies below 20 hz which are inaudible to humans

Answer 23

Infrasonic,subsonic

Question 24

Frequencies above 20,000 hz which are inaudible to humans

Answer 24

Ultrasonic

Question 25

When two waves meet on the same medium the affect on the medium is the algebraic sum of the individual affects from the two waves

Answer 25

Superposition

Question 26

Occurs when two waves interfere such that both waves deflect the medium in the same direction(when two crests or two troughs meet)

Answer 26

Constructive interference

Question 27

Occurs hen two waves displace the medium in opposite directions resulting in a smaller amplitude (when crest of one wave meets the trough of another)

Answer 27

Destructive interference

Question 28

(Stationary wave) when two identical traveling waves that are traveling in opposite directions superimpose

Answer 28

Standing wave

Question 29

A point on a medium that is not being displaced(moved) due to wave interference

Answer 29

Node

Question 30

A point on the medium that is experiencing maximum displacement as a result of wave interference

Answer 30

Antinode

Question 31

The original wave traveling through the original medium

Answer 31

Incident wave

Question 32

The portion of the wave energy that bounces off of the boundary

Answer 32

Reflected wave

Question 33

The portion of a wave energy that passes over a boundary into the new medium

Answer 33

Transmitted wave

Question 34

Wave energy bouncing off of a boundary

Answer 34

Reflection

Question 35

A diagram that shows the direction the wave is traveling

Answer 35

Ray diagram

Question 36

An arrow drawn in the direction a wave is traveling

Answer 36

Ray

Question 37

A line drawn at a right angle to the boundary(perpendicular to the boundary)

Answer 37

Normal

Question 38

The angle between the normal and the incident Ray

Answer 38

Angle of incidence

Question 39

The angel between the normal and the reflected Ray

Answer 39

Angle of reflection

Question 40

The angle of reflection always equals the the angle of incidence

Answer 40

The law of reflection

Question 41

The change in direction of a wave as it crosses the boundary between two media

Answer 41

Refraction

Question 42

The bending of a wave as it passes the edge of a barrier

Answer 42

Diffraction

Question 43

When a wave traveling through a slow medium approaches a boundary with a fast medium with an angle greater than the critical angle the wave reflects off of the boundary instead of refracting

Answer 43

Total internal reflection

Question 44

Sound with specific pitches that follow a regular pattern

Answer 44

Music

Question 45

Sound that has no set pitch or pattern

Answer 45

Noise

Question 46

Frequencies at which an object absorbs energy very efficiently

Answer 46

Natural frequencies

Question 47

A large amplitude wave occurs when an object receives continuous small vibrations at one of its natural frequencies (Tacoma narrows bridge)

Answer 47

Resonance

Question 48

Study of sound

Answer 48

Acoustics

Question 49

Hearing the same sound more than once due to the reflection of the same sound off of several surfaces

Answer 49

Reverberation

Question 50

Two notes played simultaneously that are less than seven hertz apart(humans will not hear separate notes instead we hear a single note that varies up and down in loudness)

Answer 50

Beats

Question 51

Two notes played simultaneously that are seven or more hertz apart(humans will hear two distinct notes

Answer 51

Complex wave

Question 52

A complex wave that sounds bad

Answer 52

Dissonance

Question 53

A complex wave that sounds good

Answer 53

Consonance

Question 54

Consonance occurs when two notes have a small whole number ratio (2:1, 3:1, 3:2)

Answer 54

Pythagoras' rule

Question 55

Two frequencies that have a 2:1 ratio

Answer 55

Octave

Question 56

The pitch of an approaching sound source will be higher than the pitch of a sound source that is moving away from an observer

Answer 56

Doppler effect