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sound and electromagnetism
Terms in this set (45)
occurs when small forces are applied at regular intervals to a vibrating object and the amplitude of the vibrations increase
Law of Reflection
the angle of incidence is equal to the angle of reflection
type of wave where vibrations travel perpendicular to the direction of the wave's motion
Simple Harmonic Motion
a force that restores an object to an equilibrium position that is directly proportional to the displacement of the object
shortest distance between points where the wave pattern repeats itself
the result of the superposition of two or more waves
the stationary point where two equal wave pulses meet and are in the same location, having a displacement of zero
the number of complete oscillations made each second
the disturbance is in the same direction, or parallel, to the direction of the wave's motion
Principle of Superposition
the displacement of a medium caused by two or more waves is the sum of the displacements of the individual waves
motion which repeats in a regular cycle
a single disturbance that travels through a medium
the point with the largest displacement when two wave pulses meet
the change in direction of waves at the boundary between two different media
a disturbance that carries energy through matter or space
a force exertd by a spring that is directly proportional to the amount the spring is stretched
the maximum distane an object moves from equilibrium
time needed for an object to repeat one complete cycle of motion
energy of sound, explosions, and earthquakes are all transported by ___________ waves. (1/2)
The energy of visible light is transported by electromagnetic waves, which are ___________ waves.
Sound echoes are ___________ waves.
the __________ effect occurs when the pitch of the sound is higher as the source approaches the listener and is lower when it retreats away from the listener
can travel through a medium, but do not require one. only energy and have no matter. (1/2)
sound waves above 20,000 vibrations/sec
gamma ray, x-rays, ultra violet, visible light, infrared, microwaves, radio waves (2/2)
a pressure variation that's transmitted through matter
what we hear depending on the frequency or vibration
depends primarily on the amplitude of the pressure wave
a wave that appears to be standing still, produced by the interference of two traveling waves moving in opposite directions
a wave that strikes the boundary when a wave moves across a boundary from one medium to another
(water waves, sound waves, waves traveling down rope or spring) require a medium (water, air, ropes, spring)
generated if the wave moves up and down at the same rate
a single bump or disturbance that travels through a medium.
same direction as, or parallel to, the direction of the wave's motion. (2/2)
at the surface of the water, the particles move in a direction that is both parallel and perpendicular to the direction of wave motion. has characteristics of both transverse and longitudinal waves.
consists of a massive object, called the bob, suspended by a string or light rod of length. After the bob is pulled to one side and released, it swings back and forth.
the force exerted by a spring is directly proportional to the amount that the spring is stretched
any motion that repeats in a regular cycle
springs that obey Hooke's law are called __________
oscillation of wave amplitude
an unpleasant set of pitches
pleasant set of pitches
higher frequencies which are odd numbered multiples of the fundamental frequency
Addition of two waves when the crest of one overlaps the crest of another, so that their individual effects add together. The result is a wave of increased amplitude.
Addition of two waves when the crest of one overlaps the trough of another, so that their individual effects cancel each other. The result is a wave of decreased amplitude.
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