Waves

frequency is expressed in ___

Hertz

the medium in which sound waves that you hear travel

air

measure of the energy in a wave

amplitude

what is a measure of the ___ in a wave

amplitude

seismic waves are ____ waves compressional uniform transverse both transverse and compressional

both

region where the medium is crowded and dense in a compressional wave

compression

a type of wave where the matter in the medium moves back and fourth along the same direction that the wave travels

compressional

matter moves in same direction as this wave travels

compressional

waves in which particles of the medium move only in the same direction as the motion of the wave are ____ waves light transverse stadium compressional

compressional

wave in which matter in the medium moves back and forth in the same direction the wave travels

compressional wave

_______ _____-matter in the medium moves in the same direction that the wave travels; example; sound waves

compressional waves

highest point of a wave

crest

as frequency increases, wavelength ____

decreases

bending a wave as it passes around a barrier

diffraction

the bending of waves around a barrier

diffraction

a wave will travel only as long as it has ____ to carry' matter mass energy amplitude

energy

all waves carry this

energy

Wave-repeating disturbance or movement that transfers ______ through _____ or space

energy medium

Wave A has a greater frequency than wave B, but the amplitude of the two waves is the same. The energy of wave A is greater than that of wave B t/f

false

if the wavelength of a given wave decreases, you know that its frequency will stay the same t/f

false

sound waves do not carry energy t/f

false

t/f all waves need a medium in order to travel

false

t/f in a transverse wave the matter in the medium moves back and forth in the same direction that the wave travels

false

t/f the refraction of a wave is how many wavelengths pass a fixed point each second

false

t/f transverse and congressional waves are the two types of mechanical waves

false

t/f waves transfer matter as the travel

false

the amplitude of a wave is measured from the crest of one wave to the crest of the next t/f

false

the unit for frequency is seconds t/f

false

waves in which particles of the medium move at right angles to the direction of the wave are compressional waves t/f

false

light waves travel ____ than sound waves

faster

how many wavelengths pass a fixed point each second

frequency

light waves travel faster in ____ and ____ than in liquids and solids sound waves travel ____ than sound waves

gases empty space faster

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

interference

for a given wave, if the frequency doubles , the wave length is halved doubles stays the same

is halved

the angle of incidence is equal to the angle of reflection (law)

law of reflection

a type of electromagnetic wave

light

not all waves need a medium to travel through; example: ____ waves

light

the unit for wave speed

m/s

waves carry energy without transporting _______

matter

a type of wave that travels only in matter

mechanical

a material in which a wave travels

medium

a material that a wave transfers energy through

medium

material through which a wave transfers energy

medium

mechanical waves- waves that can travel only through _____

medium

_________- a material through which a wave travels. may be solid,liquid or ____

medium gas

the units for wavelength

meters

molecules pass energy on to ________ molecules

neighboring

spread apart portion of a compressional wave, less dense region of a compressional wave

rarefraction

reflection occurs when a wave strikes an object and ___ off of it ___ types of waves can be reflected

rebounds all

the angle of incidence of a wave is always equal to the angle of ______

reflection

when a wave strikes an object and bounces off

reflection

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

refraction

ability of an object to vibrate by absorbing energy at its natural frequency

resonance

combinations-not purely transverse or compressional; example: water waves, ____ waves

seismic

a special type of wave pattern that forms when a wave continuously interfere with each other

standing wave

matter moves at right angles to the direction the wave travels

transverse

wave that makes matter in the medium move back and fourth at right angles to the direction the wave travels

transverse

wave that makes matter in the medium move back and forth at right angles to the direction the wave travels

transverse wave

_______ ______- matter in the medium moves back and fourth at right angles the direction that the wave travels; example: water waves

transverse waves

lowest point of a wave

trough

mechanical waves need a medium through which to transport energy t/f

true

t/f a wave will travel only as long as it has energy to carry

true

t/f in a transverse wave, the higher the amplitude, the more energy it carries

true

t/f the speed of a wave is determined by multiplying the wave length by the frequency

true

the lowest point on a transverse wave is the trough t/f

true

Wave ___ or, v, describes how fast the wave moves forward

velocity

all waves are produced by something that

vibrates

all waves are produced by something that does this

vibrates

the frequency of a wave equals the rate of ____ of the source that creates it

vibration

a repeating disturbance that transfers energy through matter or space

wave

repeating disturbance or movement that transfers energy through matter or space

wave

what is determined by the medium

wave speed

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

wavelength