Waves-Sound and Light
A weight on an end of a spring bobs up and down one complete cycle every 2 s. Its frequency is?
0.5 Hz
A mass on the end of a spring bobs up and down 1 complete cycle every 2 s. It frequency is
0.5 Hz.
A floating leaf oscillates up and down two complete cycles in 1 s as a water wave passes by. The wave's wavelength is 10 m. What is the wave's speed.
20 m/s
A skipper on a boat notices wave crest passing the anchor ever 5 s. The skipper estimates the distance between crest is 15 m, what is the speed of the water waves?
3 m/s
The period of the second hand on a clock is?
60 seconds
A 60 vibration per second wave travels 30 m in 1 s. Its frequency is?
60htz and it travels at 30m/s
What color light is transmitted by a piece of blue glass?
Blue
Which of the following is not a traverse wave?
Sound
The Doppler effect occurs when a source of sound moves.
Toward you, and away from you
The source of all sounds is something that is?
Vibrating
Which of these electromagnetic waves has the shortest wavelength?
X rays
Light travels fastest in
a vacuum
Sound waves cannot travel in
a vacuum
Materials generally become warmer when light is
absorbed by them
The speed of a sound wave in air depends on
air temperature
the vibrations of a longitudinal wave move in a direction?
along the direction of wave travel
Unlike a transverse wave, a longitudinal wave has no?
amplitude,frequency,wavelength,speed.
The vibrations of a traverse wave move in a direction?
at right angles in the direction of wave travel
For light, a red shift indicates that the light source is moves?
away from you
Is light a wave or particle
both
If the sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes
for light to travel from the sun to earth
Color depends on what characteristic of light?
frequency and wavelength
If you double the frequency of a vibrating object, its period
halves
The part of the electromagnetic spectrum most absorbed by water is
infrared
We are best at hearing
infrasonic or ultrasonic sound: neither
A sound wave is a
longitudinal wave
Compressions and rarefactions are characteristics of
longitudinal waves
Glass is opaque to light with wave frequencies that
match its natural frequencies
The red crab very deep in water,where sunlight is dim appears
no color-black
Double the frequency of sound and you also double its
none of the above:wavelength,speed,amplitude.
During a single period, the distance traveled by a wave is
one-wavelength
Complementary colors are two colors that
produce white light when added together
Magenta light is really a mixture of
red and blue light
You dip your finger repeatedly into water and make waves. If you dip your finger more frequently, the wavelength of the waves
shortens
The Doppler effect is characteristic of
sound waves, water waves, light waves
Wave interference occurs for
sound waves, water waves, light waves
Sound travels fastest in
steel
In a longitudinal wave, the compression's and rare fractions travel in?
the same direction
Compressions and rarefactions normally travel in
the same direction in a wave
What is the approximate range for human hearing?
twenty-twenty-thousand Hertz
Your favorite song will sound the loudest
underwater
The source of all electromagnetic waves is
vibrating charges
The source of all wave motion is a?
vibrating object
A wiggle in time is a?
vibration
sound travels faster in air if the air is
warm
The complementary color of blue is
yellow
The brightest color emitted by the sun is
yellow-green
