Physics Exam 2
If the frequency of a certain wave is 10 Hz, its period is
0.1 second
The approximate range of human hearing is
20 hertz to 20,000 hertz
What is the wavelength of a sound wave traveling at 346 m/s with a period of .5 seconds?
692 m
Green and blue make
Cyan
Lower wavelength means
Lower frequency
Wave speed is measured in
M/s
Red and blue make
Magenta
Which of these waves is longest in wavelength?
Radio waves
Sound travels faster in
Steel
Which of these waves has a higher frequency than visible light?
Ultraviolet wave
The electromagnetic spectrum is a span of electromagnetic waves ranging from very low to very high frequencies. Which of the following occupies the smallest percentage of the electromagnetic spectrum?
Visible light
Red and green make
Yellow
The solar radiation curve is
a plot of brightness versus frequency of sunlight
The vibrations along a longitudinal wave move in a direction
along the wave
The loudness of a musical sound is a measure of the sound wave's
amplitude
A sonic boom cannot be produced by
an aircraft flying slower than the speed of sound.
Diffraction:
any other bending of light(fuzzy edge of shadows)
The vibrations of a transverse wave move in a direction
at right angles to the direction of a wave travel
The type of waves that are absorbed by glass are
both infrared and ultraviolet
When the pinhole in a pinhole camera is made larger, the image is
brighter
Concave mirror
curves inward (look bigger)
Angle of incident arrow points
down
Angle of refraction arrow points
down
Refraction:
enters new medium, sin of angle of refraction. opposite side of normal, change in direction and speed
When we consider how frequently a pendulum swings to and fro, we're talking about its
frequency
Shorter wavelength means
higher frequency
A decibel is a measure of a sound's
loudness
Wavelength is measured in
meters
Diffusion:
multiple reflections due to large irregularities in surface
Sound made to undergo reverberation is sound that is
multiply reflected
Convex mirror curves
outward (look smaller)
When we consider the time it takes for a pendulum to swing to and fro, we're talking about the pendulum's
period
The vibrations along a transverse wave move in a direction
perpendicular to the wave
A sound source of high frequency emits a high
pitch
Visible light that shines on a pane of transparent glass
produces a chain of absorptions and re-emissions through the glass
Reflection:
same medium. angle of incident=angle of reflection. Opposite side of normal
The redness of a sunup or sunset is due mostly to light that hasn't been
scattered
Dispersion:
separates light by frequency, creates rainbows
A common example of a longitudinal wave is
sound
Which of these does NOT belong in the family of electromagnetic waves?
sound
The Doppler Effect is a characteristic of
sound and light waves
When sound undergoes refraction, it undergoes a change in
speed
The speed of a wave depends on
the medium it travels through
The slowing of light in transparent materials has to do with
the time for absorption and re-emission of light
Angle of reflection arrow points
up
A common source of wave motion is a
vibrating object
Your reflected image in a plane mirror is as far behind the mirror as
your distance from the mirror
