Physics Exam 2

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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


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