any disturbance that transmits energy through matter or empty space. For example there are water waves in the ocean and light waves from the sun
Energy can be carried away from its source by a wave.
waves and work
As a wave travels, it does work on everything in its path. The waves do work on the water to make it move up and down.
substance through which a wave can travel. A medium can be a solid, a liquid, or a gas.
they do not need a medium although they can go through air, water and glass. Light is an electromagnetic wave that your eyes can see.
waves that require a medium
Waves in which the particles vibrate in an up-and-down motion. It moves across or perpendicularly to, the direction that it is going.
highest point of a transverse wave.
the lowest point of a transverse wave
(in a wave) when the particles of the medium vibrate back and forth along the path that the wave moves.
A part of a longitudinal wave where the particles are crowded together
A part of a longitudinal wave where the particles are spread apart from each other.
A sound wave is an example of a longitudinal wave. sound waves travel by compressions and rarefactions of air particles.
When waves form at or near the boundary between two media, a transverse wave and a longitudinal wave can combine to form a surface wave.
the maximum distance that the particles of a medium vibrate from their rest position
the particles of a medium stay when there are no disturbances
the distance between any two crests or two troughs or compressions next to each other in a wave
The number of waves produced in a given amount of time. Expressed in Hertz (1 Hz=1/s)
wave characteristics that equals more energy
larger amplitude=more energy
shorter wavelength=more energy
higher frequency=more energy
the speed at which wave travels
v = λ x f, wave speed = wavelength x frequency
reflection happens when a wave bounces back after hitting a barrier. ex) an echo
refraction is the bending of a wave as the wave passes from one medium to another at an angle. ex) prism
The bending of waves around a barrier or through an opening. ex) talking to the ticket box people
The result of two or more waves overlapping
it is when the crests of one wave overlap the crests of another wave or waves
new wave=larger amplitude
destructive interference happens when the crests of one wave and the troughs of another wave overlap.
new wave=smaller amplitude
The loops come from the interference between the wave you made and the reflected wave. It will look like as if its standing still.
When an object vibrating at or near the resonant frequency of a second object causes the second object to vibrate