CH14 Review
F, less
T/F? The speed of sound at high altitudes, where the air is less dense is GREATER than the speed of sound at low altitudes, where the air is more dense.
T
T/F? Water waves transport energy but not water
T
T/F? When two waves are in the same place at the same time, they combine to produce a SINGLE wave.
amplitude
The __ is the greatest distance that particles in a medium move from their normal position when a wave passes.
frequency
The __ is the number of vibrations that occur in a 1-second time interval.
period
The __ is the time required for one full wavelength to pass a certain point.
interference
When two or more waves exist in the same place at the same time.
radio waves
Which type of electromagnetic wave has the greatest wavelength?
transverse
A wave that causes the particles of the medium to vibrate perpendicularly to the direction of the wave travels is called a ___ wave.
20 m.
A wave with a frequency of 0.5 Hz and a speed of 10 m/s has a wavelength of
standing wave
A(n) __ is a wave form caused by interference that appears not to move along the medium and that shows nodes and antinodes.
electromagnetic
A(n) __ wave is defined as a wave that does not require a medium.
mechanical
A(n) __ wave is defined as a wave that requires a medium.
2 m/s
A child is sending pulses down a stretched rope at a rate of 1 pulse per second. The distance between pulses is 2 meters. What is the speed of the wave?
3 s
A man is standing on the shore of a beach, up to his knees in water. Every 3 seconds a wave breaks on him. What is the period of the wave?
increase
A person standing still and listening to a siren sounding an alarm. The frequency of the sound is 500 Hz. The person begins running toward the sound at a rate of 20 m/s
1.0 m
A sound wave in air has a frequency of 340 cycles per second. What is the approximate wavelength of the sound wave?
4 m
A train of waves is moving at a speed of 20 m/s. The frequency of the waves is 5 Hz. What is the wavelength?
b/a
A wave "a" meters long has a speed of "b" meters per second. The frequency of the wave is
5 Hz
A wave has a period of 0.2 seconds. The frequency of this wave is
longitudinal
A wave that causes the particles of the medium to vibrate parallel to the direction of the wave lravels is called a __ wave.
0.5 m
If the distance from the bottom to the top of the wave is 1 meter, what is the size of the amplitude?
2 m
If the picture represents 6 meters, what is the size of one wavelength?
constructive
In __ interference, wave combine so that the resulting wave is bigger than the larges of the original waves.
destructive
In __ interference, waves combine so that the resulting wave is smaller than the largest of the original waves.
constructive
What kind of interference occurs when a crest meets a crest or if a trough meets a trough?
transverse
Light waves are modeled as what type of wave
electromagnetic
Light waves are what type of wave
longitudinal
Sound waves are what type of wave
a medium
Sound waves require this
F, lower
T/F? According to the Doppler effect, light from a star moving away from Earth will have a HIGHER frequency than light from a star moving toward Earth
T
T/F? As the frequency of sound waves increases, the wavelength of the sound waves DECREASES
T
T/F? As the frequency of the wave increases, the speed of the wave INCREASES if the wavelength stays the same.
F, decreases
T/F? As the period of a wave increases, the frequency INCREASES
T
T/F? If two tuning forks of DIFFERENT frequencies are struck at the same time, you will hear beats as the result of constructive interference followed by destructive interference.
F, slower
T/F? Light travels FASTER in glass than it does in a vacuum
T
T/F? Light waves are examples of TRANSVERSE waves.
F, destructive
T/F? Nodes in a standing wave are the result of CONSTRUCTIVE interference
F, slower
T/F? Sound waves travel FASTER through air than through solids
T
T/F? The color of visible light depends on the WAVELENGTH of the light
T
T/F? The energy of a mechanical wave depends on the AMPLITUDE of the wave
diffraction
The bending of a wave as it passes an edge or opening
refraction
The bending of a wave as they pass from one medium to another.
reflection
The bouncing back of a wave as it meets a surface or boundary
frequency
The difference between visible light and X rays is that the ___ of X rays is greater
pitch
The frequency of a sound wave determines the ___ of the sound.
crest
The highest point of a transverse wave is called the __.
trough
The lowest point of a transverse wave is called the __.
Earth
The medium seismic waves travel thorugh
destructive
What kind of interference occurs when a crest meets a trough?
okay
Type "okay". You need to know that interference of light causes colorful swirls in soap bubbles because some waves bounce directly off the outer surface of the bubble, while some waves travel through the bubble, then bounce off the inner surface of the bubble. The constructive and destructive interference of these different sets of light waves produce different colors.
mechanical
Water waves are what type of wave
wavefront
surface made up of all the points on a wave that have the same energy