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the nature of sound waves- physics

Terms in this set (59)

sound waves are ______ waves
longitudinal
t or f: as the teacher talks, students hear the voice because particles of air move from the mouth of the teacher to the ear of the student
true
all sound waves are produced by a ________ object
vibrating
sound waves consists of both ________ and ________
crests and troughs
josh is holding one end of a slinky; the opposite end is attached to a wall. josh wishes to produce a longitudinal wave in the slinky. describe how josh must move his hand in order to produce a longitudinal wave.
he must move his hand in the same direction the slinky travels
what are the two types of particles moving through the air as a sound wave is moving
compression, rarefactions
on a wave, the parts that are closer together are known as
compressions
on a wave, the parts that are more spread out are known as
rarefactions
a science fiction film depicts inhabitants of one spaceship (in outer space) hear the sound of a nearby spaceship as it zooms past at high speeds. critique the physics of this film
in space, there is no air to make sound waves or no particles to vibrate so the other spaceship would not hear anything
how fast the wave moves through the medium is known as
speed
how long the wave is is known as
wavelength
how often the particles vibrate about their fixed position
frequency
how much time it takes the particles to complete a vibrational cycle
period
how far the particles vibrate away from their resting position
amplitude
the pitch of a sound is directly related to the _______ of the sound wave
frequency
high pitched sounds have relatively large _______ and small _______
frequency, wavelength
as the frequency of a sound increases, the wave length ________ and the period ________
decreases, decreases
a sound wave is described as being 384 waves/s. this quantity describes the wave's _______
frequency
the speed of a sound wave depends upon the
properties of the medium through which it moves
if a person yells (as opposed to whispering), then it will cause air molecules ________
to vibrate with greater amplitude
if a person yells (as opposed to whispering), then it will cause the loudness of sound
to be louder
a light wave is an electromagnetic wave which has both an electric and magnetic component associated with it. electromagnetic waves are often distinguished from mechanical waves. the distinction is based on the fact that electromagnetic waves
can travel through a region void of matter and mechanical waves cannot
what is the order of the electromagnetic spectrum starting from long wavelength and low frequency
radio waves
microwave radiation
infared
visible light
UV light
X-ray
gamma radiation
which region of the electromagnetic spectrum has the highest frequency
gamma radiation
which region of the electromagnetic spectrum has the longest wavelength
radionwaves
which region of the electromagnetic spectrum will travel with the fastest speed
all travel at the same speed
which two regions of the electromagnetic spectrum have the tendency to cause the greatest damage to humans
x-rays, gamma radiation
which two regions of the electromagnetic spectrum have the greatest ability to diffract
radio waves, microwaves
which color of the visible light spectrum has the highest frequency
violet
which color of the visible light spectrum has the lowest wavelength
red
glass is said to be _______ to visible light
transparent
other materials absorb and /or reflect light only. they do not allow light to pass through it. such materials are said to be
opaque
the atmosphere is said to be _______ to visible light but _______ to ultraviolet light
transparent, opaque
as light passes through transparent objects, the speed at which it travels is
less than the speed at which it travels through air
the most common set of three primary light colors are those that correspond to the three colors that the nerve cells are most sensitive to. what are they
red, blue,green
red and blue make
magenta
red and green make
yellow
green and blue make
cyan
the complementary light to red light is
cyan
the complementary light to green light is
magenta
the complementary light to blue light is
yellow
red + green =
yellow
red + cyan =
white
white - red =
cyan
white - cyan =
red
white - red- cyan =
black
red +blue=
magenta
green + magenta =
white
white - green =
magenta
white - magenta =
green
white - green - blue =
black
green + blue =
yellow
blue + yellow =
white
white - blue +
yellow
white - yellow=
blue
white - magenta - green =
black
what are the seven components of visible light
red
orange
yellow
green
blue
indigo
violet
white =
all colors reflected
black =
all colors absorbed
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