Phys q waves

Kind of waves we see in everyday life?

microwaves, ocean waves, sound waves/music

wave

repeatin disturbance or movement that transfers energy through matter or space

How are ocean waves an ex of waves?

disturb water & transfer energy through it

Light - waves ex

travel from sun & 2 earth

medium

matter through which wave travels; can b gas, liquid, solid

^{all _______ carry _____ without transporting the ___________ from place to place; ex:}

waves; energy; medium; boat in ocean doesn’t travel w/ waves only moves up & down/ back n forth

a wave will travel only as long as it has what

energy to carry; ripples will die in water soon after pebbles dropped

vibrating

anything that moves up & down or back & forth in rhythmic way

all waves are produced by something that

vibrates

2 main types of waves

mechanical & electromagnetic

mechanical waves

waves that travel only through matter

mechanical waves ex

sound waves, ocean waves, stadium wave

what must mechanical waves travel through

medium; sound wave=air, ocean= water, stadium wave=people

two types of mechanical waves

compression/longitudinal & transverse

how do transverse waves move

side to side but matter in medium moves up & down

In transverse waves, the matter in medium will always move

perpendicular to motion of the wave

What motion creates transverse waves

up & down; ocean waves= side 2 side but med (water) goes up & down, doing wave, waving rope or string up & down

In compressional wave, the matter in the medium moves

back & forth in same direction that wave travels

In compressional wave the matter in the medium will always move

same direction as wave; back & forth motion makes comp waves; ex= presin slinky 2gether & letting go, electricity

Wave properties:

all diff, small or lrg, close or far

transverse waves have similar

shapes no matter how big or what med they travel through

Crest

highest pt of transverse waves

troughs

lowest prt of transverse waves

amplitude

greatest distance particles r displaced from resting posit bc of wave

Larger waves have

bigger amplitudes & carry more energy

Do compressional waves have crests or troughs

no bc their partics move back & forth vs up & down

Compressional waves have _______ & _________

compressions & rarefactions

compressions

crowded areas

rarefactions

stretched out areas

wavelength

distance from 1 crest of wave 2 next crest, or 1 through 2 next; compressional: distance between 2 compressions or rarefactions

frequency

# of full wavelengths that pass a pt in given time interval; symbol=f; SI unit=hertz