types of waves
What are the two main types of wave motions?
Longitudinal and Transverse
What is a node?
Where the amplitude is 0. Regions of zero displacement of the medium.
You always measure the angle of incidence, reflection, and refraction from the...
Normal line.
What are the two types of interference?
Constructive and Destructive.
What is the frequency of a wave if its period is .25 seconds?
4 Hz
Which wave does the motion of vibratory disturbance run parallel to the direction of travel of a wave through a medium?
Longitudinal
What is amplitude?
What is the law of reflection?
The angle of incidence is equal to the angle of reflection.
When two waves pass through each other in opposite directions, the interference affects their...
amplitude.
A wave has a frequency of 2 hertz and a speed of 3 meters per second. the distance covered by the wave in 5 seconds is
15 m
What type of wave classifies electromagnetic waves?
Tranverse
What is frequency?
The number of waves that pass a fixed point in a unit of time.
As a wave enters a new medium what remains constant?
Frequency
As the opening of a barrier increases, what happens to the effects of Diffraction?
decreases.
A surfacing whale in an aquarium produces water wave crests having an amplitude of 1.2 meters every .4 second. If the water wave travels at 4.5 meters per second, the wavelength of the wave is
1.8 m
What are the three types of mechanical waves?
Longitudinal, transverse, surface
What is superposition?
When does a ray refract toward the normal line?
When the ray enters a denser medium. lower density ---> higher density.
When does the destructive interference in waves occur?
When a crest and a trough overlap.
The speed of a ray of light traveling through a substance having an absolute index of refraction of 1.1 is
2.7 x 10^8s
What is one similarity between electromagnetic waves and mechanical waves?
They transfer energy.
What is the Doppler Effect?
The change in observed or apparent frequency due to relative motion of source and observer.
A ray of light (f= 5.09 x 10^14 Hz) traveling in air strikes a block of sodium chloride at an angle of incidence of 30 degrees. What is the angle of refraction for the light ray in the sodium chloride?
19 degrees.
Which type of wave is a result of a combination of constructive and destructive interference?
A ray of light (f= 5.09 x 10^14 Hz) in air is incident on a block of Lucite at an angle of 60 degrees from the normal. The angle of refraction of this ray in Lucite is closest to...
35 degrees.