Studied by 0 people
Looks like no one added any tags here yet for you.
what are waves
waves that transfer energy and information without matter
Describe evidence that with water and sound waves it is the wave and not the water or air itself that travels
if you drop a twig into a calm pool of water. ripple form and move across the water surface. the ripples dont carry the water or twig away
if you strum a guitar string and create a sound wave. the sound wave travels to your ear so you can hear it but it doesnt carry the air away from your guitar
what is frequency in relation to waves
the amount of waves that pass a given point per second
what is wavelength
length of a full cycle of a wave e.g peak to peak trough to trough
what is amplitude in refs to wave
displacement from rest position to the crest
what is a period in ref to waves
number of seconds it takes for one full cycle.
what units is freuqency in
Hz hertz
what is wave velocity? and what is it measured it
measured in meters per second
the speed of the wave
how do you work out wave velocity/speed
distance / time
wavelenght (M) times frequency ( hz)
what is a longitudinal wave
the vibrations that are parallel to the direction the wave travels
what is a tranverse waves
the vibration travel perpendicular at a right angle to the wave
what word is used when a wave bounces off things
reflection
what is the normal line in terms of reflection and refraction
an imaginary vertical line that is perpendicular to the boundary
what is refraction
a change in speed causing a change in direction
when entering a denser material the light waves…??
slow down and bend towards the normal
when entering a less dense material the light waves
speed up and bend away from the normal
what are the effects of absorption
Note
Flashcard